Add support for detecting date ranges in gitdm config files
Add support for detecting date ranges in gitdm config files

gitdm's email maps support date ranges, to handle situations where a given email
address is associated with a certain company, and then that person changes
companies.  facade-worker.py now detects when a changed config line is
affected by a date range, and updates the database accordingly.

Signed-off-by: Brian Warner <760e7dab2836853c63805033e514668301fa9c47@bdwarner.com>

mkdolan/facade,brianwarner/facade,mkdolan/facade,brianwarner/facade,brianwarner/facade,mkdolan/facade