Remove unit.addDeps, unit.delDeps
Rewrite all core
Add _fist_contrib_unit_asker unit
Add fist_contrib_unit_incoming

 * fix tests for node 0.11
 * imporove log messages
Fix jsdoc
Support unit.hashArgs to memorize calls
Change unit calls memorization mechanism
Improve cache issues detection
Add tests for fist.js
Fix benchmarks
Fix fist_contrib_unit_incoming params hashing
Improve fist benchmark
Improve memoization mechanism
Rename server benchmark files
Add core.plugin() function
Support install settings
Support trust proxy

Also:
 * update logger
 * improve connect class
Move routing logic into Server
Added benchmarks

Also small refactor
Rename track members

 * track.incoming -> track.req
 * track.outgoing -> track.res