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)