Fix type inference for dictionary indexed by a constant
More accurate description of the numpy.empty signature
Merge pull request #358 from serge-sans-paille/fix/minor-bugfixes

Fix/minor bugfixes
Add missing submodule in setup
Move typing information in its own submodule
MrProper on type_dependencies

Also fix some issues and add tests for these:
* Incorrect for iterate variable handling
* Incorrect if handling
* Incorrect augassign handling
* Raise errors on Incorrect variables
* use os.path.join for system paths
MrProper on reordering