json5hs: Serialising to and from JSON5

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--- This library provides a parser and pretty printer for converting between Haskell values and JSON5. ## Example ```haskell ghci> import Text.JSON5 ghci> encode [("key1",1),("key2",2)] "[[\"key1\",1],[\"key2\",2]]" ghci> import Text.JSON5.String (runGetJSON) ghci> input <- getLine {'singleQuotes': 0xabcde, pos: +3, infnan: +Infinity, escape: "\t\u1234", trailing-comma: ['here',], } ghci> runGetJSON readJSValue input Right (JSObject (JSONObject {fromJSObject = [("singleQuotes",JSNumber (JSRational (703710 % 1))),("pos",JSNumber (JSRational (3 % 1))),("infnan",JSNumber (JSInfNaN Infinity)),("escape",JSString (JSONString {fromJSString = "\t\4660"})),("trailing-comma",JSArray [JSString (JSONString {fromJSString = "here"})])]})) ghci> import Text.JSON5.Pretty ghci> ppJSValue $ makeObj [("key1", JSString $ toJSString "value1"), ("key2", JSArray [JSNull, JSBool True])] {"key1": "value1", "key2": [null, true]} ghci> import Text.JSON5.Generic ghci> ppJSValue $ toJSON $ Just [2,1,4] {"Just": [2, 1, 4]} ghci> fromJSON (JSString $ toJSString "string") :: Result String Ok "string" ```