TapQueue server and station 0.12.0

Added

• Reports: pages printed over any period, added up by person, group, printer, queue, day or
  month. Reports in the console (for anyone with a role in Jobs) with a CSV download,
  tapqueue-admin report [--by ...] [--from ...] [--to ...] [--csv], and
  GET /api/v1/admin/reports/usage. They count what page limits count: released jobs, pages times
  copies. See docs/reports.md.

Changed

• The database goes to schema 16 (an index for reports). The server backs it up first, as it
  does before every schema change since 0.11.