Began syntax changes
Created viewer for Shiro code with two types of gallery: freeform, and grid
Added Arc
Changed fills to transparent.
Created click example
Updated to ANTLR 4.2.2
Merge branch 'master' into 0.2Syntax
Modified grammar to handle new option keywords and nested nodes
Updated grammer to new syntax.
Made changes across entire runtime to account for removal of subjunctive nodes