colm 0.9 - Feb 19, 2012
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	* The parse loop now scans data that is owned by the input stream. It
	  is copied into a contiguous block in the scanner when the token is
	  consumed.
	* The syntax of lexical regions was altered to omit the name. The
	  curlies were replaced with lex ... end syntax.
	* The syntax of namespaces were altered. Curlies were replaced with 
	  namespace <ID> ... end.

colm 0.8 - Dec 29, 2012
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	* The parse statement now includes a call to the finish operation. It
	  returns a value of type parser<Type>. The result tree and any error
	  message can be retrieved from this object using 'tree' and 'error'
	  members.
	* Dropped curly brackets and the name from the syntax of lexical region
	  defintition. Using "lex ... end"
	* Dropped curly brackets from the syntax of namespaces and context blocks.
	  Using "namespace N ... end N" and "context N ... end N"
	* Now have a growable stack instead of a large, fixed, pre-allocated stack.