$typewrapper keyword

[Agrabski]

Implement typewrapper keyword. It should specify a type wrapper, based on another type, that has a set of allowed operators, user defined methods and conversions.

Preliminary specification

$typewrapper<Type> WrapperName
${
$conversions:
[explicit|implicit] [other type] [default|method body]
$methods:
[method declarations]
$operators:
[return type] [operator name|list of operator names] [default|operator body ((only for single operator))]
$}