v3.0.0 Pre-release

Notable changes

• Cherry-picking gl-matrix is now possible #339 #343 (e.g. import * as vec2 from 'gl-matrix/vec2';)
• Webpack has been replaced with rollup #345
• When simply including dist/gl-matrix.js in your website and not importing it, you have to include glMatrix. before everything (e.g. glMatrix.vec4.create() instead of vec4.create())

Minor fixes

• vec2/3/4.normalize sets out to [0,0,...] when input is invalid