Main

Adding initial attempt at creating a custom C++ fixed point template.

Adding local updates to display.py that were never properly committed.

Adding simple email test script to debug email-from-script issues.

Set CXXFLAGS and CFLAGS environment variables for whatever it's worth.

The generate_row.py script is no longer needed but this is officially
the last version of it with all last local modifications.

Adding new script to build ffmpeg and dependencies. Apparently I spent a
good while working on this locally but never committed it.

Adding update from github: https://github.com/packjpg/packJPG/commit/93a7dfbe1fb9aa2aee763cc5b8a16c14b2f66c8c

Minor updates mainly to pwmgr to fix Gtk3.0 deprecations.

Update generate rows script for repayment schedule.

Adding automated watering system scripts.