- Support .inf/.nan
    - Always output decimal point when dumping floats
    - YAML directive needs space
    - Improve emitter
    - Output multiline strings as literal block scalars
    - Fix regex for integers in Core Schema
    - Fix dumping of dualvars
    - Fix emitting of empty strings
    - Improve emitter scalar styles
    - Allow zero indented sequences for complex mapping keys/values
    - Fix parsing empty quoted strings