Merge remote-tracking branch 'upstream/master' into include-amber-dev

Conflicts:
	.gitignore
	CHANGELOG
	CONTRIBUTING.md
	Gruntfile.js
	README.md
	bin/amberc
	bin/amberc.bat
	bin/release-worker.sh
	bin/release.sh
	bin/setversion.sh
	external/amber-dev/lib/amberc.js
	external/amber-dev/tasks/grunt-amberc.js
	package.json
	src/Compiler-Exceptions.js
	src/Compiler-Exceptions.st
	src/Compiler-Tests.js
	src/Compiler-Tests.st
	src/Helios-Core.js
	src/Helios-Core.st
	src/Kernel-Classes.js
	src/Kernel-Classes.st
	src/Kernel-Collections.js
	src/Kernel-Collections.st
	src/Kernel-Tests.js
	src/Kernel-Tests.st
	src/Spaces.js
	src/Spaces.st
	support/parser.js
	support/parser.pegjs
Path to bugs using 'devkit' label
Bump version to 0.0.3.
Ignoring 'external' dir in npm and bower.