- flow depth support for new_http_inspect
- TCP session refactoring and create libtcp
- fix ac_sparse_bands search method
- doc and build tweaks for piglets
- expanded piglet interfaces and other enhancements
- fix unit test return value
- add catch.hpp include from https://github.com/philsquared/Catch
- run catch unit tests after check unit tests
- fix documentation errors in users manual
