Adds HTMLCanvas >> entity:. Fixes #172.
Merge pull request #359 from herby/gh-172

Adds HTMLCanvas >> entity:. Fixes #172.
Fixes #339.
Merge pull request #360 from herby/gh-339

Fixes #339.
KernelObjects: add JSObjectProxy>>value

return contents of the 'value' attribute if it exists
otherwise return the result of Object>>value
Symbol >> asJavascript fixed. Fixes #182.
JSObjectProxy: add >>at:ifAbsent:
JSObjectProxyTest: add test for >>at:ifAbsent:
Merge pull request #362 from herby/gh-182

Symbol >> asJavascript fixed. Fixes #182.
JSObjectProxy>>value: use >>at:ifAbsent:
JSObjectProxy: add unit tests for >>value
JSObjectProxy>>at:ifAbsent: take care of property which is set to 'undefined' (as suggested by Herby)
JSObjectProxyTest>>testAtIfAbsent: also test for property with 'undefined' value
Merge pull request #361 from mkroehnert/proxy

Add JSObjectProxy>>value
amber updates

acking branch 'amber/master'

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