Added corresponding getters for SpanStyles setters.
Added corresponding getters for SpanStyles setters.

Dador/libjass,Dador/libjass,Arnavion/libjass,Dador/libjass,joshuabrown-ellation/libjass,joshuabrown-ellation/libjass,joshuabrown-ellation/libjass,Arnavion/libjass,Arnavion/libjass