Added cttp.
New cttp file.
Compile cttp.
More C files.
Trivial test cahnge.
Various HTTP client fixes.
Attempted fix to an intermittent sync event bug.
Revert "Remove capnproto from build"

This reverts commit 67f25c0aa5cf24ab0493bcdb442125577ea91d25.
Pull in capnproto submodule as build dep

Also update c-capnproto.
WIP Raft network base
Comments
More work
More work
Rejigger the event loop again
WIP more work