v1.3.1

Major updates

• c16ba31: Updated Docker Hub repo (#112). See notes above.
• 127c3d5 - af710b9: Added ability to delete all inactive Timers (#108).
• 682ebb3: Implement pull-to-refresh (#107)

Minor updates

• 005a4f1: Corrected timer urls to use plural form.
• 6333b0b: Move add button to header in list views.
• 703782b: Use provided end in Timer.stop() (#111)
• 5b24ff2: Move environment variables to example Docker Compose file (#110)
• 8e5364d: Ensure that empty environment values get defaults
• c0db245: Do not enforce two columns in dashboard