Warning cleanups, kill md5 and cereal dependencies in the testsuite.
Add forgotten #ifdef.
...add another forgotten #ifdef.
Trim down the module export list.
Document the 'Snap.Internal.Debug' module.
Merge pull request #201 from 23Skidoo/snap-internal-debug

Document the 'Snap.Internal.Debug' module.
Commit failing test for #203 (testing code not populating rqPostParams).
Make sure buildRequest populates the post parameters. Closes #203.
Allow new io-streams.