Update awscrt and remove support for python3.5

• Python3.5 is EOL, remove support for it.
• Update awscrt to 0.11.19
• Add __version__ to the package

Fix Raspberry Pi wheels

• Use awscrt 0.11.17, which is working again on piwheels.org for python 3.7

Http bugfix

• More validation of HTTP/1.1 messages (#273); from aws-crt-python->aws-c-http (#190)

Fix memory leaks and MQTT race conditions

• BUGFIX: several memory leaks fixed
  • awsiot.eventstreamrpc (used by greengrasscoreipc) had circular references the gc could not clean up
  • awscrt.eventstream.rpc.ClientConnection was leaking its native part
  • awscrt.eventstream.rpc.ClientContinuation was leaking incoming headers
  • awscrt.http.HttpRequest was leaking its headers
  • awscrt.auth.AwsSigningConfig was leaking its native part
  • each call to awscrt.auth.aws_sign_request() was leaking native native data
• BUGFIX: several MQTT race conditions fixed
• BUGFIX: fixed errors when application is running on Windows for 21 days

Re-release: Fixes for Raspberry pi

This is a re-release of what should have been v1.5.11 which did not have the right tag name.

• Fix missing files in source distribution. This should fix the release on piwheels.org.
• Reduce amount of memory needed to compile. This should fix installs from source on older Raspberry Pis.

Updated Greengrass IPC client

• Updated Greengrass IPC client (#172)
• Updated MQTT to configure protocol operation timeout (#171)
• Update docs (#163)

EventStreamRPC connect ack bug fix

• New pypi wait strategy (#157)
• Updating dependency to pick up event stream RPC client fix. (#162)

awscrt 0.10.7

v1.5.6

latest-awscrt (#158)

MQTT on-message callback has more info

• MQTT on-message callbacks have new qos, retain, and dup args. This is a backwards-compatible change.

• Allow custom credentials providers via awscrt.auth.AwsCredentialsProvider.new_delegate()

Greengrass v2 IPC Connection and Sample

v1.5.4

Greengrass v2 IPC Connection and Sample (#144)