version bumped to 0.3.4
Added a parent paramter to ISuper, changed parents to added during desugar rather than after
small clean up from previous commit
resolved dependencies
Small fix the PExp Parents
Fixed small typo from previous commit
More fixes for PExp parents
even more fixes for PExp parents
Fixed a problem with the i226 fix

the orginal fix was made too early rather than at the correct place in
the alloy generator
see
:http://gsd.uwaterloo.ca:8888/question/948/unary-minus-generated-incorrectly-for-alloy42?answer=1078#answer-container-1078
merged `develop` into Redefinition