adding jsdocs for PVector methods
pvector todos
fixing indents
Tests and bugfixes for trig functions
- unit test for trig functions
- anglemode implemented for acos, asin, atan, atan2
- atan2 works now
changed name of test function
Merge pull request #162 from antiboredom/master

Unit tests and bug fixes for trig functions
Merge pull request #161 from shiffman/master

Adding JSDocs to PVector
Merge remote-tracking branch 'upstream/master'

:m
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