CHANGELOG.md

Changes

v0.8.0 (2023-09-11)

• add (*Streamer) WriteWithContext to allow for a non-blocking experience, in a conditionnal fashion;
• upgrade direct dependencies;
• bump min Go version to 1.18 and max version to 1.21;

v0.7.0 (2022-10-06)

• allow opt-in client options while constructing one the BigQuery clients;
  • motivation is to allow connecting to a local BigQuery emulator (#10);
  • it gives however more flexibility then just that (e.g. passing custom credentials and any auth-related matters);
• improve our linting of this codebase;

Upgraded Dependencies:

• cloud.google.com/go: v0.103.0 => v0.104.0
• cloud.google.com/go/bigquery: v1.38.0 => v1.42.0
• cloud.google.com/go/compute: v1.8.0 => v1.10.0
• cloud.google.com/go/iam: v0.3.0 => v0.5.0
• github.com/google/go-cmp: v0.5.8 => v0.5.9
• github.com/googleapis/enterprise-certificate-proxy: v0.1.0 => v0.2.0
• golang.org/x/net v0.0.0-20220812174116-3211cb980234: => v0.0.0-20221004154528-8021a29435af
• golang.org/x/oauth2 v0.0.0-20220808172628-8227340efae7: => v0.0.0-20221006150949-b44042a4b9c1
• golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4: => v0.0.0-20220929204114-8fcdb60fdcc0
• golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab: => v0.0.0-20220928140112-f11e5e49a4ec
• golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f: => v0.0.0-20220907171357-04be3eba64a2
• google.golang.org/api: v0.92.0 => v0.98.0
• google.golang.org/genproto: v0.0.0-20220815135757-37a418bb8959 => v0.0.0-20220930163606-c98284e70a91
• google.golang.org/grpc: v1.48.0 => v1.50.0

A big thanks to two new contributors:

• Martin Olofsson (@waiq)
• Andreas Lindfalk (@andreas-dentech)

v0.6.30 (2022-08-16)

Upgraded Dependencies:

• cloud.google.com/go/bigquery: v1.37.0 => v1.38.0
• cloud.google.com/go/compute: v1.7.0 => v1.8.0
• golang.org/x/net: v0.0.0-20220805013720-a33c5aa5df48 => v0.0.0-20220812174116-3211cb980234
• golang.org/x/oauth2: v0.0.0-20220722155238-128564f6959c => v0.0.0-20220808172628-8227340efae7
• golang.org/x/sys: v0.0.0-20220804214406-8e32c043e418 => v0.0.0-20220811171246-fbc7d0a398ab
• google.golang.org/api: v0.91.0 => v0.92.0
• google.golang.org/genproto: v0.0.0-20220805133916-01dd62135a58 => v0.0.0-20220815135757-37a418bb8959

v0.6.29 (2022-08-08)

Upgraded Dependencies:

• cloud.google.com/go/bigquery: v1.36.0 => v1.37.0
• github.com/googleapis/gax-go/v2: v2.4.0 => v2.5.1
• golang.org/x/net: v0.0.0-20220728211354-c7608f3a8462 => v0.0.0-20220805013720-a33c5aa5df48
• golang.org/x/sys: v0.0.0-20220731174439-a90be440212d => v0.0.0-20220804214406-8e32c043e418
• google.golang.org/api: v0.90.0 => v0.91.0
• google.golang.org/genproto: v0.0.0-20220728213248-dd149ef739b9 => v0.0.0-20220805133916-01dd62135a58

v0.6.28 (2022-08-01)

Upgraded Dependencies:

• golang.org/x/net: v0.0.0-20220722155237-a158d28d115b => v0.0.0-20220728211354-c7608f3a8462
• golang.org/x/sys: v0.0.0-20220722155257-8c9f86f7a55f => v0.0.0-20220731174439-a90be440212d
• google.golang.org/api: v0.88.0 => v0.90.0
• google.golang.org/genproto: v0.0.0-20220722212130-b98a9ff5e252 => v0.0.0-20220728213248-dd149ef739b9
• google.golang.org/protobuf: v1.28.0 => v1.28.1

v0.6.27 (2022-07-25)

Upgraded Dependencies:

• cloud.google.com/go/bigquery: v1.35.0 => v1.36.0
• golang.org/x/net: v0.0.0-20220708220712-1185a9018129 => v0.0.0-20220722155237-a158d28d115b
• golang.org/x/oauth2: v0.0.0-20220630143837-2104d58473e0 => v0.0.0-20220722155238-128564f6959c
• golang.org/x/sync: v0.0.0-20220601150217-0de741cfad7f => v0.0.0-20220722155255-886fb9371eb4
• golang.org/x/sys: v0.0.0-20220715151400-c0bba94af5f8 => v0.0.0-20220722155257-8c9f86f7a55f
• google.golang.org/api: v0.87.0 => v0.88.0
• google.golang.org/genproto: v0.0.0-20220715211116-798f69b842b9 => v0.0.0-20220722212130-b98a9ff5e252

v0.6.26 (2022-07-18)

Upgraded Dependencies:

• golang.org/x/sys: v0.0.0-20220712014510-0a85c31ab51e => v0.0.0-20220715151400-c0bba94af5f8
• google.golang.org/genproto: v0.0.0-20220712132514-bdd2acd4974d => v0.0.0-20220715211116-798f69b842b9
• google.golang.org/grpc: v1.47.0 => v1.48.0

v0.6.25 (2022-07-12)

Upgraded Dependencies:

• cloud.google.com/go/bigquery: v1.34.1 => v1.35.0
• golang.org/x/net: v0.0.0-20220630215102-69896b714898 => v0.0.0-20220708220712-1185a9018129
• golang.org/x/sys: v0.0.0-20220702020025-31831981b65f => v0.0.0-20220712014510-0a85c31ab51e
• google.golang.org/api: v0.86.0 => v0.87.0
• google.golang.org/genproto: v0.0.0-20220630174209-ad1d48641aa7 => v0.0.0-20220712132514-bdd2acd4974d

v0.6.24 (2022-07-04)

Go Version Support:

• min version is now Go 1.17 (was 1.15);
• max version is now Go 1.18 (was 1.17);
  • Note that latest stable release should always work, but this is the max version that is being tested as part of our CI pipeline;

Upgraded Dependencies:

• cloud.google.com/go: v0.102.1 => v0.103.0
• golang.org/x/net: v0.0.0-20220624214902-1bab6f366d9e => v0.0.0-20220630215102-69896b714898
• golang.org/x/oauth2: v0.0.0-20220622183110-fd043fe589d2 => v0.0.0-20220630143837-2104d58473e0
• golang.org/x/sys: v0.0.0-20220624220833-87e55d714810 => v0.0.0-20220702020025-31831981b65f
• google.golang.org/api: v0.85.0 => v0.86.0
• google.golang.org/genproto: v0.0.0-20220624142145-8cd45d7dbd1f => v0.0.0-20220630174209-ad1d48641aa7

v0.6.23 (2022-06-27)

Upgraded Dependencies:

• cloud.google.com/go/bigquery: v1.33.0 => v1.34.1
• github.com/google/uuid: v1.1.2 => v1.3.0
• golang.org/x/net: v0.0.0-20220617184016-355a448f1bc9 => v0.0.0-20220624214902-1bab6f366d9e
• golang.org/x/oauth2: v0.0.0-20220608161450-d0670ef3b1eb => v0.0.0-20220622183110-fd043fe589d2
• golang.org/x/sys: v0.0.0-20220615213510-4f61da869c0c => v0.0.0-20220624220833-87e55d714810
• google.golang.org/api: v0.84.0 => v0.85.0
• google.golang.org/genproto: v0.0.0-20220617124728-180714bec0ad => v0.0.0-20220624142145-8cd45d7dbd1f

v0.6.22 (2022-06-20)

Upgraded Dependencies:

• cloud.google.com/go: v0.102.0 => v0.102.1
• cloud.google.com/go/bigquery: v1.32.0 => v1.33.0
• cloud.google.com/go/compute: v1.6.1 => v1.7.0
• golang.org/x/net: v0.0.0-20220607020251-c690dde0001d => v0.0.0-20220617184016-355a448f1bc9
• golang.org/x/sys: v0.0.0-20220520151302-bc2c85ada10a => v0.0.0-20220615213510-4f61da869c0c
• google.golang.org/api: v0.82.0 => v0.84.0
• google.golang.org/genproto: v0.0.0-20220607140733-d738665f6195 => v0.0.0-20220617124728-180714bec0ad

Added Dependencies:

• github.com/googleapis/enterprise-certificate-proxy: v0.1.0

v0.6.21 (2022-06-08)

Upgraded Dependencies:

• golang.org/x/net: v0.0.0-20220526153639-5463443f8c37 => v0.0.0-20220607020251-c690dde0001d
• golang.org/x/sync: v0.0.0-20220513210516-0976fa681c29 => v0.0.0-20220601150217-0de741cfad7f
• google.golang.org/api: v0.81.0 => v0.82.0
• google.golang.org/genproto: v0.0.0-20220527130721-00d5c0f3be58 => v0.0.0-20220607140733-d738665f6195
• google.golang.org/grpc: v1.46.2 => v1.47.0

v0.6.20 (2022-05-30)

Upgraded Dependencies:

• cloud.google.com/go: v0.101.1 => v0.102.0
• golang.org/x/net: v0.0.0-20220517181318-183a9ca12b87 => v0.0.0-20220526153639-5463443f8c37
• golang.org/x/oauth2: v0.0.0-20220411215720-9780585627b5 => v0.0.0-20220524215830-622c5d57e401
• golang.org/x/sys: v0.0.0-20220517195934-5e4e11fc645e => v0.0.0-20220520151302-bc2c85ada10a
• google.golang.org/api: v0.80.0 => v0.81.0
• google.golang.org/genproto: v0.0.0-20220505152158-f39f71e6c8f3 => v0.0.0-20220527130721-00d5c0f3be58

v0.6.19 (2022-05-18)

Update Dependencies:

• update google.golang.org/grpc to v1.46.2 (was v1.46.2);
• update google.golang.org/api to v0.80.0 (was v0.78.0);
• update github.com/googleapis/gax-go/v2 to v2.4.0 (was v2.3.0);

Updated Indirect Dependencies:

• update golang.org/x/sys, golang.org/x/net, google.golang.org/genproto and golang.org/x/xerrors to latest (no semver);

v0.6.18 (2022-05-10)

Updated Dependencies:

• update cloud.google.com/bigquery to v1.32.0 (was v1.31.0);
• update cloud.google.com/go to v0.101.1 (was v0.101.0);
• update google.golang.org/api to v0.78.0 (was v0.77.0);

Updated Indirect Dependencies:

• update golang.org/x/sys, golang.org/x/net, and google.golang.org/genproto to latest (no semver);

v0.6.17 (2022-05-02)

Updated Dependencies:

• update google.golang.org/api to v0.77.0 (was v0.75.0);

Updated Indirect Dependencies:

• update golang.org/x/sys, golang.org/x/net, and google.golang.org/genproto to latest (no semver);

Added Indirect Dependencies:

• add github.com/google/go-cmp v0.5.8

v0.6.16 (2022-04-25)

Updated Dependencies:

• update google.golang.org/grpc to v1.46.0 (was v1.45.0);
• update cloud.google.com/go to v0.101.0 (was v0.100.2);
• update google.golang.org/api to v0.75.0 (was v0.74.0);

Updated Indirect Dependencies:

• update cloud.google.com/go/compute to v1.6.1 (was v1.6.0);
• update golang.org/x/sys, golang.org/x/net, golang.org/x/oauth2 and google.golang.org/genproto to latest (no semver);

v0.6.15 (2022-04-19)

Updated Dependencies:

• update cloud.google.com/bigquery to v1.31.0 (was v1.30.2);
• update github.com/googleapis/gax-go/v2 to v2.3.0 (was v2.2.0);

Updated Indirect Dependencies:

• update cloud.google.com/go/compute to v1.6.0 (was v1.5.0);
• update golang.org/x/sys, golang.org/x/net, golang.org/x/oauth2 and google.golang.org/genproto to latest (no semver);

v0.6.14 (2022-04-11)

Updated Indirect Dependencies:

• update golang.org/x/sys, golang.org/x/net and google.golang.org/genproto to latest (no semver);

v0.6.13 (2022-04-01)

Updated Dependencies:

• update cloud.google.com/bigquery to v1.30.2 (was v1.30.0);
• update google.golang.org/api to v0.74.0 (was v0.73.0);

Updated Indirect Dependencies:

• update golang.org/x/sys and google.golang.org/genproto to latest (no semver);

v0.6.12 (2022-03-22)

Updated Dependencies:

• update cloud.google.com/bigquery to v1.30.0 (was v1.29.0);
• update github.com/googleapis/gax-go/v2 to v2.2.0 (was v2.1.1);
• update google.golang.org/api to v0.73.0 (was v0.71.0);

Updated Indirect Dependencies:

• update google.golang.org/protobuf to v1.28.0 (was v1.27.0);
• update golang.org/x/sys and google.golang.org/genproto to latest (no semver);

v0.6.11 (2022-03-14)

Updated Dependencies:

• update google.golang.org/api to v0.71.0 (was v0.70.0);
• update cloud.google.com/bigquery to v1.29.0 (was v1.28.0);
  • ease of use (suggested by @glendc): introduce TableParentFromParts in order to auto-format the parent table URI correctly;
• update google.golang.org/grpc to v1.45.0 (was v1.44.0);

Updated Indirect Dependencies:

• update cloud.google.com/go/iam to v0.3.0 (was v0.2.0);
• update golang.org/x/oauth2, golang.org/x/sys and google.golang.org/genproto to latest (no semver);

v0.6.10 (2022-02-28)

Updated Dependencies:

• update google.golang.org/api to v0.70.0 (was v0.69.0);

Updated Indirect Dependencies:

• update cloud.google.com/go/compute to v1.5.0 (was v1.3.0);
• update golang.org/x/net, golang.org/x/oauth, golang.org/x/sys and google.golang.org/genproto to latest (no semver);

v0.6.9 (2022-02-21)

Updated Dependencies:

• update google.golang.org/api to v0.69.0 (was v0.68.0);
• update cloud.google.com/bigquery to v1.28.0 (was v1.27.0);

Updated Indirect Dependencies:

• update google.golang.org/genproto to latest (no semver);

v0.6.8 (2022-02-14)

Updated Dependencies:

• update google.golang.org/api to v0.68.0 (was v0.67.0);

Updated Indirect Dependencies:

• update cloud.google.com/go/compute to v1.3.0 (was v1.2.0);
• update golang.org/x/sys and google.golang.org/genproto to latest (no semver);

Added Indirect Dependencies:

• added cloud.google.com/go/iam at v0.2.0;

v0.6.7 (2022-02-07)

Updated Dependencies:

• update google.golang.org/api to v0.67.0 (was v0.66.0);

Updated Indirect Dependencies:

• update cloud.google.com/go/compute to v1.2.0 (was v1.1.0);
• update golang.org/x/sys and google.golang.org/genproto to latest (no semver);

v0.6.6 (2022-01-31)

Updated Dependencies:

• update cloud.google.com/bigquery to v1.27.0 (was v1.26.0);
  • augments internal retry logic for insertAll (default) client: https://github.com/googleapis/google-cloud-go/pull/5387/files;
• update google.golang.org/grpc to v1.44.0 (was v1.43.0);

Updated Indirect Dependencies:

• update cloud.google.com/go/compute to v1.1.0 (was v1.0.0);
• update google.golang.org/api to v0.66.0 (was v0.65.0);
• update golang.org/x/net, golang.org/x/sys and google.golang.org/genproto to latest (no semver);

Removed Indirect Dependencies:

• remove cloud.google.com/go/iam;

v0.6.5 (2022-01-17)

Dependencies:

• update cloud.google.com/bigquery to v1.26.0 (was v1.25.0);
• update cloud.google.com/go to v0.100.2 (was v0.99.0);
• update cloud.google.com/api to v0.65.0 (was v0.63.0);

Indirect Dependencies:

• update github.com/cncf/xds, github.com/cncf/xds/go, github.com/udpa/go, golang.org/x/net, golang.org/x/sys and google.golang.org/genproto to latest version (no semver);

New Indirect Dependencies:

• add cloud.google.com/go/compute (v1.0.0);
• add cloud.google.com/go/iam (v0.1.0);
• add golang.org/x/text (v0.3.7);

Removed Indirect Dependencies:

• remove github.com/census-instrumentation/opencensus-proto;
• remove github.com/cespare/xxhash/v2;
• remove github.com/davecgh/go-spew;
• remove github.com/envoyproxy/go-control-plane;
• remove github.com/envoyproxy/protoc-gen-validate;

v0.6.4 (2022-01-04)

Dependencies:

• update cloud.google.com/go to v0.99.0 (was v0.98.0);
• update cloud.google.com/api to v0.63.0 (was v0.61.0);
• update cloud.google.com/grpc to v1.43.0 (was v1.42.0);
• update github.com/cncf/xds, github.com/cncf/xds/go, golang.org/x/net, golang.org/x/sys and google.golang.org/genproto to latest version (no semver);

v0.6.3 (2021-12-06)

Maintenance:

• reduce cyclomatic complexities in test/integration/main.go;
• add comments to internal functions for which it was missing;

Dependencies:

• update cloud.google.com/go/bigquery to v1.25.0 (was v1.24.0):
  • contained a breaking change in the ManagedWriter API, NoStreamOffset is no longer to be passed to AppendRow and instead the call is to be made without an option for our purposes (Default streams);
• update cloud.google.com/go to v0.98.0 (was v0.97.0);
• update cloud.google.com/api to v0.61.0 (was v0.60.0);
• update github.com/cncf/xds/go, golang.org/x/net, golang.org/x/sys and google.golang.org/genproto to latest version (no semver);

Documentation:

• Fix version code compare links in CHANGELOG.md;
• Add Awesome-Go badge to README as BQWriter is since 2021-11-17 listed in the awesome-go curated list;

v0.6.2 (2021-11-17)

Documentation:

• Add a FAQ to the README.md documentation;

Testing:

• Improve test code coverage (was ~69%, now it is %80+);

Other changes:

• update golang.org/x/net, golang.org/x/sys and google.golang.org/genproto to latest version (no semver);

v0.6.1 (2021-11-15)

Bug Fixes:

• Remove duplicate deadline for InsertAll client, this setting is no longer required as anyhow the insertAll inner BQ client has a max deadline which cannot be configured, which we can use as-is;
• Add Retry logic to InsertAll client as to support Retrying tmp/internal BQ errors, these are by design not supported by BigQuery google Go API itself, as can be read on googleapis/google-cloud-go#3792, but we do want to support these as retryable as that is usually what you want to do;
  • Permanent issues will fail after ~32s and will non the less end up in the user's logs;
• Reset flush ticket in Streamer always, even in case of a put-flush error, this is fine by convention;

Documentation:

• Add a CONTRIBUTORS file to list anyone who contributed to this project, and is not listed as an AUTHOR;

Other changes:

• Change DefaultMaxBatchDelay from 5s to 10s;
• update golang.org/x/net, golang.org/x/sys and google.golang.org/genproto to latest version (no semver);

v0.6.0 (2021-11-12)

Documentation improvements:

• Rewrite the batch-driven Streamer README example to stay true to its purpose and reflect closer the real world scenarios it is meant to serve in (TODO);
• Refactor internal benchmark package as a stand-alone binary, and rename it to integration:
  • The latter because it was from the beginning used as integration dev-triggered tests rather than a true benchmark;
  • And the first to allow more flexibility and differentiation in how we test what streamer configuration;
• Add developer instructions to the README;

Bug Fixes:

• Storage Streamer Client couldn't be closed without hanging, now it can be closed;
• Storage Streamer Client can now be used with BigQuery.Schema, previously it would result in a schema name error;
• Storage Streamer Client now demoted Canceled/Unavailable code errors for append rows to debug logs: as these are related to underlying connections being reset or a similar kind of EOF event;
• improve & clean up integration tests;

v0.5.1 (2021-11-10)

Update storage API documentation & end-to-end tests:

• storage writer API expects proto2 semantics, proto3 shouldn't be used (yet);
• the normalizeDescriptor should be used to get a descriptor with nested types in order to have it work nicely with nested types;
• The proto well-known types aren't yet properly supported, and Timestamp is among them. The public docs have a section on wire format conversions: https://cloud.google.com/bigquery/docs/write-api#data_type_conversions.
  • Short answer: use an int64 with epoch-micros for fields that have the Timestamp type... and this instead of import "google/protobuf/timestamp.proto";
• Batch client supports auto-detection of BigQuery schema for CSV and Json source formats, with Json you have to be aware in that case however that you match the casing exactly, as otherwise it will complain about duplicate case-insensitive fields, go figure...

Bug Fixes:

• a couple of error logs used wrongfully the directive %w for errors instead of %v, this has now been corrected and should result in cleaner logs;

v0.5.0 (2021-11-09)

• add batch upload support (https://cloud.google.com/bigquery/docs/batch-loading-data), this is a third client next to the already supported InsertAll (legacy) and storage API clients, fixes issue #2 with PR #5;
• add benchmark code (mostly as end-to-end tests) with production-ready Google Cloud infrastructure, load and data;
• remove forked managedwriter code (fixes issue #4):
  • managedwriter is still in active development and having to maintain our own copy would be almost a project on itself;
  • author seems to be willing to fix our issues where appropriate;
  • author also is willing to promote this package to the official bigquery Golang API. There is no time promise here, the only condition seems to be that the author has to be happy with the API signatures;
  • there are a couple of open issues tracked for the official Google managedwriter which remain unresolved:
    • make GRPC/ManagedWriter stats tracking opt-in or configurable: googleapis/google-cloud-go#5100;
    • document and support correctly nested proto types for the storage API client: googleapis/google-cloud-go#5097;
    • be able to configure and globally limit the gax.Retryer used for the storage API client: googleapis/google-cloud-go#5094;

Bug Fixes:

• storage API:
  • fixes related to EOF errors are fixed by switching over to the latest version of the BQ Storage managedwriter;
• logger:
  • std logger (STDERR) was logging without the use of newlines to separate log statements;

v0.4.1 (2021-12-06)

• add storage API driven stream examples to README;
• fix nil deref bug when creating streamer using StorageAPI;

v0.4.0 (2021-11-05)

• refactor code:
  • all internal code is now found in one of the internal packages, as to have a cleaner codebase and keeping all its definitions explicitly internal;
  • added internal BQ Storage client, which is a heavily modified fork from https://github.com/googleapis/google-cloud-go/tree/a2af4de215a42848368ec3081263d34782032caa/bigquery/storage/managedwriter;
    • the fork is only meant to be as long as required, it is desired to switch to the upstream managed writer as soon as possible;
    • Only using the default stream is supported. CommittedStream and/or PendingStream can be supported upon request;
  • constants are now moved to the constant package of this module as to make it very clear within the code that these are constants as well as to allow the ability for both the internal as well as the public root package to make use of it;
  • the Logger interface is moved to its own log package for the same reasons as the introduction of the constant package;
• adds initial StorageAPI Support:
  • Only using the default stream is supported. CommittedStream and/or PendingStream can be supported upon request;
• bump min Go version supported to Go 1.15, as we make use of the time.Ticket.Reset functionality which is only available sine Go 1.15:
  • Note this feature isn't critical so if ever required for a good reason, we can probably work around it and downgrade the min Go version once again;
• updated dependencies to latest:
  • google.golang.org/grpc: v1.42.0;

Other updates made to the repository:

• enforce issue templates in the OTA-Insight/bqwriter GitHub project;
• add a pull request template in the OTA-Insight/bqwriter GitHub project;
• rename this file to CHANGELOG.md (was CHANGES.md) in order to better reflect the usual conventions;
• add other conventional special files: AUTHORS and CODEOWNERS;

v0.3.1 (2021-10-28)

• fix README.md badges and rename LICENSE to LICENSE.txt;
• updated dependencies to latest:
  • golang.org/x/*: 2021-10-20+;
  • google.golang.org/api: v0.59.0;

v0.3.0 (2021-10-25)

• remove unused WriteRetryConfig (its use was eliminated in v0.2.0);
• fix a linter issue found in v0.2.0's streamer.go codebase (indention);
• add golint-ci dev + CI support for better code quality;

v0.2.0 (2021-10-19)

• remove exponential back off logic from insertAll driven streamer client, as this logic is already built-in the std BQ client used internally;
  • we do still keep the max deadline on top of that by using a deadline context;
• remove the builder-pattern approach used to build a streamer, and instead use a clean Config approach, as to keep it as simple as possible, while at the same time being more Go idiomatic;
• upgrade google.golang.org/grpc to v1.41.0, was on v1.40.0;

v0.1.0 (2021-10-18)

Initial pre-release version. Not yet ready for production-use.

This version is already used for internal projects at OTA Insight, mostly for testing purposes.

• provide a small API (Streamer) to write rows concurrently to a specific BQ table;
• the client within this API can be build (StreamerBuilder) using a builder with sane defaults;
• most configurations can be optionally configured where desired;
• dependencies are kept to the bare minimum google cloud dependencies, with no other third party dependencies required;