Updated event system

• Merge pull request #3 from torch-ly/event-functions a5cc138
• fixed problem with pointTo tests 017b8fb
• fixed problem with viewport tests 87959a4
• bug fixing in on and off subscribtion functions bbca67a
• temp commit to save changes (events dont work in this commmit) dfa7ae7
• changed dataChanged functions to new event fire functions 87e4fd9
• added subscribtion functions to object funcitons be07f80
• added global events ebbca67
• added more events 797c07a
• added on, off, fire function (untested) 6ba513f
• fixed problem with calling some drawing functions dad080f
• added all current types of subscribtion to drawings d5be7bc
• added background remove subscribtions 333f215
• added character remove subscribtions 1b56105

v0.8.4...v0.9.0