Several country code formattings
Add standard vCard properties not used by Gmail
UK number formatting

Based on <http://www.area-codes.org.uk/formatting.php>.
Allow splitting multiple files
Create LICENSE.txt
Use .txt file for license
Swiss numbers formatting
Install Bash completion to the first available directory

See <http://unix.stackexchange.com/questions/85842/makefile-idiom-to-install-to-the-first-available-directory>.
Add PyCharm project files
Tweaks according to pep8, pyflakes and PyCharm
Validate literals containing backslash correctly

Solves issue #21, "Escaped commas are not handled as such".
Sort lines
Avoid leaving isodate egg around after cleaning
Remind user to push tags
Extract Python code to separate file
Assume that the correct Python version is on the path

Can be overridden by using `PYTHON=/path/to/python2.7 make`.
Releasing should depend on building, not testing
Don't call no-op `setup.py clean`

Might have done something useful before, but not anymore.
Separate development documentation
Remove generated Python files