Introduced PPCMappedActionNode for PPMappedActionParser. It's compilation is not yet ideal, bot works for now.

Introduced PPMappedActionParser, a specialized parser for map:ped actions. In order to compile nicer code, compiler has to be able to tell between simple (==>) action parser and mapped (map:) action parser.

Action inlining [1/x]: Initial support for inlining actions parsers (i.e., ==>) The code of the action is now inlined into parsing method rather then delegated to stored block. Mapping parser (i.e., map:[...]) are not supported and not detected, so using them cause crash. This will be fixed later.

Codegen refactoring [2/x]: Added PPCCompiler>>codeIf:then:else: this allows for more structured coding of conditionals. then/else code is evaluated inside new block so it may allocate its own temporaries.

Codegen refactoring [1/x]: Introduced a PPCCodeBlock A PPCCodeBlock is an abstraction of a block of statements with temporaries. This will allow for scoped temporary management in code generator - temporary variables could be allocated for block only. (i.e., make them block-temporaries)

Fixed choice inlining.

Add inspector tab to present parser tree.

More fixes for inlining of nodes

Oops, merged code which contained Pharoism's

Avoid using of a bridge parser for top-most composite parser ...by converting PPCompositeParser to PPCDelegatePrser.