Window update fix and additional tests

v0.2.3

Added unit tests for TLS negotiation failure and download of a medium…

ALPN is more permissive for http 1.1to support custom protocol strings that aren't restricted by the spec.

v0.2.2

Fallback for ALPN is now http 1.1. We'll likely change this up a bit …

bad connection detection mechanism.

v0.2.1

Actually commited changes this time. (#31)

Http improvements, better shutdown control, and global init/shutdown functions.

Partially fix connection_setup_shutdown test (#28)

Fix some race-conditions in test, but leave it commented out.
There are still server-bootstrap shutdown issues that appear regularly in x86 builds.

Mostly working Http 1.1 implementation. Tagging so we can start playing around with bindings.

v0.1.0

User can initiate a connection close. (#22)