Rename python.h to lmppython.h

Update issue templates to have a different template for bug reports and feature requests.

Take advantage of the fact, that GitHub now allows to have separate issue templates for bug reports and feature requests

Patch release 1 February 2019

Correct calls to atom->delete_callback()

Use argparse module in for Install.py scripts in lib and further portability and consistency enhancements. Some lint removal as well.

Collected small changes and bugfixes for the next patch release

must convert regions bounding box to lattice coordinates before checking to reduce lattice creation range

Replace bundled moltemplate distribution with installation instructions only

Combined USER-FEP related updates

Support using fix qeq/shielded with pair style reax/c

Added 4D memory grow routine

Optimize performance of create_atoms for large boxes and small regions

compute entropy/atom - enhancement/optimization

Fix in extract() method of pair_thole