Whitespace and superflous comments

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Use PyPy 2.4

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Rename _invoke to _prim_fun

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Simplify by removing unused function

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Fixed condition to avoid allocating dynamic empty array

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Fixed super class of Method

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added #hasGlobal: primitive

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added #invokeOn:with: primitive

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added #invokeOn:with: primitive

Signed-off-by: Stefan Marr <git@stefan-marr.de>