Rails 5.2 compatibility (#10)

Rails 5.2 compatibility

Author: Roman Lemekha

.gitignore

@@ -7,4 +7,5 @@ mysql_blob_streaming-*.gem
 /ext/mysql_blob_streaming/mysql_blob_streaming.bundle
 /ext/mysql_blob_streaming/mysql_blob_streaming.so
 /ext/mysql_blob_streaming/mysql_blob_streaming.o
-/lib/mysql_blob_streaming/
+/lib/mysql_blob_streaming/*.bundle
+/lib/mysql_blob_streaming/*.so

Gemfile

@@ -6,5 +6,4 @@ gemspec
 # Dependencies for test environment
 gem "rake"
 gem "test-unit"
-gem "pry"
-gem "activerecord", "~> 4.2"
+gem "activerecord", "~> 5.2"

lib/mysql_blob_streaming/version.rb

@@ -0,0 +1,3 @@
+class MysqlBlobStreaming
+  VERSION = "2.3.0"
+end

mysql_blob_streaming.gemspec

@@ -1,6 +1,8 @@
+require File.expand_path('lib/mysql_blob_streaming/version', __dir__)
+
 Gem::Specification.new do |spec|
   spec.name = 'mysql_blob_streaming'
-  spec.version = %x(git describe --always).chomp.gsub(/-([0-9]+)-g/, '.\\1.')
+  spec.version = MysqlBlobStreaming::VERSION
   spec.summary = 'A blob streaming extension for the native Ruby-MySQL2 adapter'
   spec.author = 'Infopark AG'
   spec.homepage = 'http://www.infopark.de/'
@@ -11,7 +13,7 @@ Gem::Specification.new do |spec|
   EOF
   spec.license = 'MIT'
 
-  spec.add_dependency 'mysql2', '>= 0.3.16', '< 0.4.0'
+  spec.add_dependency 'mysql2', ">= 0.4.4", "< 0.6.0"
   spec.required_ruby_version = '>=2.0.0'
 
   spec.files = Dir["lib/**/*.rb", "ext/**/*.{c,h,rb}", "README.markdown"]

test/fixtures.rb

@@ -10,7 +10,7 @@ module Fixtures
 
   class Blob < ActiveRecord::Base; end
 
-  class FixtureMigration < ActiveRecord::Migration
+  class FixtureMigration < ActiveRecord::Migration[5.2]
     def self.up
       create_table :blobs do |t|
         t.column :name, :string