Shutdown fixes

delay websocket shutdown callback (#75)

This is similar to https://github.com/awslabs/aws-c-http/pull/72

Websocket's `on_connection_shutdown` callback shouldn't fire during the handler shutdown, it should fire during the channel's shutdown.

This change clarified some questions I had about lifetime/ownership (hence the deleted TODOs and modified API comments)

Fix shared-lib builds

v0.2.16

fix shared lib builds (#67)

Remove fpic from old linux build.

We don't need the fpic version of libcrypto anyways, we're building a…

… static lib. (#59)

more release CD

v0.2.14

in bash the list arguments need to be quoted. (#58)

more CD release crap

v0.2.13

sigh.... this sux. (#57)

codebuild cd script update

Fixed codebuild script to use codebuild style artifacts from codepipe…

…… (#56)

* Fixed codebuild script to use codebuild style artifacts from codepipeline.

* aws-c-http is the primary artifact.

More CD script fixes.

v0.2.11

Fixed the batch file again... (#55)

Cd script updates

v0.2.10

improvements to batch script. (#54)

kick CD pipeline with new scripts.

v0.2.9

aws_websocket_convert_to_midchannel_handler() (#52)

Fixed aws-c-compression dependency

v0.2.8

I forgot the thing (#47)