Fixed windows build and leaky dependency on libcrypto

v1.5.2

Pulled latest crt, addresses libcrypto interface leaking and tests fr…

Removed CMake External Project and transition to git submodules.

Keep in mind that after this release, if you want to use the BUILD_DEPS option, you need to either perform a recursive clone or perform a recursive initialization of the submodules.

Fix sts provider stream leak

• Fix STS credentials provider stream leak

Fix leak in websockets

v1.4.2

Fix leak in websockets. (#83)

Fix bug in samples

Samples properly handle missing --ca_file option

Update to AWS CRT v0.6.8

v1.4

Updated crt version to v0.6.8. (#80)

Bug fixes for stream seeking and signing.

v1.3

Update to v0.6.7 of crt. (#78)

Windows security update.

v1.2

Updates for crt to pick up windows security fixes. (#77)

IOT SDK is now Generally Available!

Update readme for GA, and dependencies to latest crt. (#76)

* Update readme for GA, and dependencies to latest crt.

Feature complete IOT SDK.

Update tag for crt-cpp (#71)

* Update tag for crt-cpp

* Updated the dependency auto build.