spelling, capitalization and nomenclature updates
spelling, capitalization and nomenclature updates

Also:
- add "show" before plane display types for clarity
- change to rcParams.update({"svg.fonttype":'svgfont'}) so that fonts are embedded while saving .svg figures
Caoimhinmg/PmagPy,lfairchild/PmagPy,Caoimhinmg/PmagPy,lfairchild/PmagPy,lfairchild/PmagPy,Caoimhinmg/PmagPy