[release] Implement strict unit contracts for built-in functions and update error messaging for dimensional mismatches (#103)

[release] Fix issues during unit exponentiation and a crash on old Android version (#102)

[release] Temporary file support and ability to auto-open it on launch; and fix misc issues (#100)

[release] Implement rational number support and fix misc issues (#96)

[release] Custom number formatting, ability to split and merge lines, auto-focus in new files, and misc bug fixes (#93)

[release] Add `factorial()`/`fact()` functions and fix miscellaneous issues (#85)

[release] Add functions (`raw()`, `value()`, `dropUnit()`) to strip the unit label and use the plain number in other calculations + misc fixes and improvements (#72)

[release] [Experimental] Sync files to/from a custom folder (#70)

[release] Add support for `π` (pi) synonym (#65)

Use consistent case for headings

[release] Ability to convert between 100+ units in natural language (#64)

Move download badges to the top in README

[release] Implement manual conflict resolution UX during backup restoration (#62)

[release] Ability to cross-reference files in one another and access their vars and functions (#61)

[release] Fix: Modulo operator is not working (#56)