Support escaping of tricky characters, support quoted strings
Support escaping of tricky characters, support quoted strings

keys or values can be quoted or unquoted:
- leisure=park
- leisure="park"
- "leisure"=park
- "leisure"="park"

kartta-labs/iD,openstreetmap/iD,openstreetmap/iD,openstreetmap/iD,kartta-labs/iD,digidem/iD,digidem/iD,morray/iD,morray/iD,kartta-labs/iD