Implement header compression draft 01
Integrate new header compression
Remove old zlib compression and other cleanup
Add comment
Remove NGHTTP2_ERR_CREDENTIAL_PENDING check
Remove NGHTTP2_OPT_MAX_RECV_CTRL_FRAME_BUFFER option
Update doc
Refactor nghttp2_hd
Fix uninitialized nghttp2_hd_ws_entry index
Use substitution as long as no eviction is required
Remove debug output
Cleanup
Cleanup
Cleanup