Merge pull request #122 from jere8184/rearrange_dbghelp

Update util.cpp

Merge pull request #106 from heinezen/gamestate-fixes

openage gamestate fixes

new language features:

* nyan file format version numbers
* `optional` members - can be `None` or a value
* `children` object members - can only hold heirs of the speficied object
* `abstract` object members - can hold object where not all members have values
* `dict` members - key-value storage with arbitrary types (keys must be hashable)
* infinity handling for numbers
* int and float compatiblity

and of course internal improvements and bugfixes.

Merge pull request #81 from heinezen/spec-rework

Specification improvement

nyan now more or less works!