fix(components): Support KO 3.2 custom elements

Closes #33
fix(parser): Support bare bindings

Closes #34 - data-bind=‘’x, y, z”. becomes “x: null, y: null, z:null”
fix(changelog): Use non-stream conventional-changelog

The gulp-conventional-changelog package is deprecated.
See:
https://github.com/tomchentw-deprecated/gulp-conventional-changelog/issu
es/1
Updated changelog
Release: 0.5.0