Improve walking, no more random cancelWalks
Add 3 new creatures events onAppear/onDisappear/onWalk
Add algorithm that calculates walk ping
Fix paralyze animation while walking
* Can now filter market items by vocation, level, slot type, and depot items.
* Added new bitwise lib for handling flag operations.
* Can now get/set local player vocation/premium (TODO: spell list).
Make otclient's framework flexible enough to run console apps like
servers, so this mean is possible to build otclient versions without
graphical interface and use it's framework to code servers
Eduardo Bart