Parse strings with a number and unit
parse unit
नेपाली एकाइ — Nepali traditional units (ropani, aana, paisa, dam, bigha, kattha, dhur) plus standard length / weight / area / volume / temperature. Compound notation parser/formatter (`5 ropani 3 aana 2 paisa` ↔ m²), bilingual lookups, Devanagari digit su
Parse numbers and units from css values.
Parses a number and unit string, and returns the unit used