Merge pull request #19 from hruellan/master

Added more delta-encoding options. Added static Huffman encoding. Corrected behavior with framework for multiple files.
Change 'stream' nomenclature to 'session' where it's more appropriate
Quick and dirty patch to use a new processor for each "connection."
Removed the functionality where headers were renumbered. As it turned
out it was costly and didn't help.
Add "host" streamier.
Merge branch 'master' of github.com:http2/compression-test
Revert "Removed the functionality where headers were renumbered. As it turned"

This reverts commit b80f7df26305c6c21274c0bed7a516ad6c870129.
Clarified options, made more of them available from the command-line,
          added ability to use 1-byte indices instead of 2-byte indices
          which would be good for extremely memory-constrained
          implementations.