Bump version to 1.4.0

Bump version to 1.3.0

Maintenance release of the 1.2 branch.

Compatible with the 'legacy' Cantera 2.1 Python module.

Fix logic error in determining whether to call setBoundaryValues

setBoundaryValues should be called only if the user has actually supplied a
value for one or more of the specified options, but the check being made
resulted in setBoundaryValues being called in almost all cases.

Bump version to 1.2.0

Ember 1.2.x will continue to use the legacy Cantera Python
interface. Ember >= 1.3 will use the new Cantera Python interface.

Set version to 1.1.0

Also add the __version__ attribute to the Python module

Moved some documentation into headers so it will be processed by Doxygen

Removed the no-longer-used Boost.NumPy library from ext/