Remove unused buttons in the welcome page of Helios. Fixes #949
Update CHANGELOG
Issue 962: Use Symbol's implementation of String>>#value:
- Implement String>>#value:
- Add tests
Merge pull request #963 from seandenigris/Issue962

Issue 962: Use Symbol's implementation of String>>#value:
Enhance Setup your Amber clone

Add a little more info and reference links for new users
change contributors link to amber-smalltalk (fix #968)
Issue #969 - amberc "RethrowErrorHandler does not understand #handleError:"
- Remove super send from RethrowErrorHandler>>#handleError:
Merge pull request #970 from seandenigris/Issue969

Issue #969
Chunk Importer - convert character literals to strings #971
- Extend SmalltalkParser to convert character literals to Strings
Chunk Importer - convert character literals to strings #971
- Extend SmalltalkParser to convert character literals to Strings
- Update CodeGeneratorTest>>#testLiterals to verify new behavior
Merge pull request #972 from seandenigris/Issue971

Chunk Importer - convert character literals to strings #971
Removing cli.

With amber-cli 0.0.6 with -d option, it is possible
to compile with alternate Amber location.
bin/amberc{,.bat} scripts are left for this purpose
(they use global amberc but specify local amber to use).

(grunt task already had option to specify amber location)
Using amberc and amberc grunt task from amber-dev.
Using legacy test runner from amber-dev.
Merge pull request #976 from herby/remove-cli

Remove cli
Fix #664

- Don't display progress when migrating classes
Fixes Spaces with JSObjectProxy not understanding #isNil
Ignoring 'external' dir in npm and bower.
Merge remote-tracking branch 'upstream/master' into include-amber-cli

Conflicts:
	.gitignore
	CHANGELOG
	CONTRIBUTING.md
	Gruntfile.js
	bin/amberc
	bin/amberc.bat
	bin/release-worker.sh
	bin/release.sh
	bin/setversion.sh
	external/amber-cli/cli/src/AmberCli.js
	external/amber-cli/cli/src/AmberCli.st
	external/amber-cli/cli/support/amber-cli.js
	external/amber-cli/cli/support/amberc-cli.js
	external/amber-cli/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 'cli' label