Bot Framework SDK for Python v4.5.0b4

This minor release is a follow up to our launch of the Python Bot Framework, v4.5. It consists primarilty of bug fixes as well as working towards feature parity with botbuilder-dotnet.

Review all changes that went into 4.5.0b4 in the detailed Change Log

Bug Fixes

• [PR 300] Added flask package for App Insights
• [PR 296] Fix for Add 'properties' property to conversationAccount [Issue #225]
• [PR 295] Fix for Transcript logger [Issue #144]
• [PR 294] Fix for Porting of BlobStorage in botbuilder azure [Issue #235]
• [PR 291] Fix for Remove Mention Support [Issue #273]
• [PR 285] Fix for Add support for Message Reactions to ActivityHandler [#243]
• [PR 282] Fix for Move samples over to using flask instead of aiohttp [Issue #212]
• [PR 279] Fix for NumberPrompt Locale Not Fully Implemented [Issue #269]
• [PR 278] Fix for Gov support with unit tests. [Issue #119], [Issue #232]

Feature Parity

• [PR 293] Initial port of Telemetry Middleware
• [PR 290] Feature parity for PrivateConversationState [Issue #145]
• [PR 289] Feature parity for Add Severity Enum [Issue #288]
• [PR 287] Feature parity for Implement ShowTypingMiddleware in botbuilder-core [Issue #286]
• [PR 284] Feature parity for Implement AutoSaveMiddleware [Issue #283]
• [PR 280] Feature parity for Adding confirm prompt to Core Bot and fix on that sample error handling
• [PR 276] Feature parity for Recognizers versions updated, confirm prompt now working with tests
• [PR 272] Feature parity for Pylint fixes for botbuilder-ai library code and tests
• [PR 271] Feature parity for Pylint fixes for botframework-connector library code and tests
• [PR 264] Feature parity for Adding Active Learning Feature