Make it posssible to set boundary values on ghosts.
Move orientation detection to the subdomain class.
Add support for indirect addressing in the PBC cdoe.
Code formatting fixes in subdomain_runner.py
[tmp] start work on subdomain communication with indirect addressing.
Fix problems found when running regression tests.
Fix typo in internals.rst
Update about.rst by adding a link to the GitHub repository.
Fix typos in subdomain_connection.
Clean up the makefile.
Fix problems in the example files.