use get_access_token in signed_session, to ensure the Authorization t…

…oken in the session is not expired (microsoft#602)

Merge pull request microsoft#536 from microsoft/eric/fixGetTeamsConne…

…ctorClient

Teams connector client creation cleanup

Merge pull request microsoft#370 from microsoft/axsuarez/fix-appinsig…

…hts-setup

Adding processor as exported package

Initial template for echo bot (microsoft#351)

Add missing flask package (microsoft#300) (microsoft#301)

Merge pull request microsoft#245 from microsoft/daveta-core101

Corebot 101 initial checkin

Merge pull request microsoft#96 from Microsoft/4.0.0.a6

4.0.0.a6

Merge pull request microsoft#92 from Microsoft/v-stgum/TurnContext

rename BotContext to TurnContext