v2.11.0

Added

• Added support for $XDG_CONFIG_HOME config file/actions location
• Created CODE_OF_CONDUCT.md (#217)
• Created CHANGELOG.md (#218)

Changed

• Updated add command to accept lowercase priority (#230)
• Clean tests and version file in Makefile. Don't ignore errors in tests.
• Updated README.md (#219)
• Update Downloads links to point at the Releases page (#228)
• Set the executable bit when preparing releases (#156)

Fixes

• Update links to use https
• Suppress todo.sh error messages when invoked during completion ([#8])