0.3.0

The following release notes are just copied from docs/CHANGELOG.md

[0.3.0] - 2020-07-16

Added

• Unit tests
• Doxygen documentation (incomplete)
• "Skip" added to Alarm "Enabled" options
• Timeout for alarms - the alarm stops if it is active for too long
• User input validation for the date supplied to the sd command and in the
  RTC section of the GUI.

Changed

• Better LCD backlight control

Fixed

• Buzzer collisions - multiple alarms active at the same time caused
  unpredictable behavior of the buzzer