Tweak HaxeParameterPsiMixinImpl.getType and some internal documentation.
Update the jar file for deployment (testing).
This is a reasonably stable build.

Class Hierarchies work without throwing exceptions.
(Method and Call Hierarchies don't work.)

Class Hierarchy pane (Ctrl-H, or Navigate->TypeHierarchy) is usable for types.
There are some scoping issues, in that only the class (file) you are editing is
found, rather than checking for the name under the cursor.

Class Diagrams (Ctrl-Alt-U, or RightClick->Diagram in an editor pane) draw
correctly, though they do not show methods and showing sub-types gives no
results.