create a method getRegionFile, which automatically loads a region file if present. fixes deleteChunk not deleting from unloaded regions
create a method getRegionFile, which automatically loads a region file if present. fixes deleteChunk not deleting from unloaded regions

mcedit/pymclevel,arruda/pymclevel,ahh2131/mchisel,ahh2131/mchisel,codewarrior0/pymclevel,arruda/pymclevel,codewarrior0/pymclevel,mcedit/pymclevel