v3.27.0

[NickGeek]

• A number of improvements to the drawing editor (#267, fixes #190)
• iOS homescreen icon (#266)
• The latest version of fend with fancy temperature conversions
• A number of under-the-hood upgrades to increase stability and recording now works in offline mode!
• Search is a little less laggy (although there is still work to do in that area)
• Due date recalculation doesn't shake up the sidebar (fixes #254 @HaydenSolo)