Remove authentication functions moved to lib/authc
Change logging levels

Dial down some of the logging in the application from info to debug.
warning -> warn
Some notes about logging
Turn compression on by default
Change compression default
Filter underscored elements from err output
Setup message to debug
Give a warning but don't fail if spam server is offline
Use less-wordy connect-databank 0.13.x
Update API.md
Merge pull request #888 from kabniel/patch-1

Update API.md