add missing param
don't expand tabs chars; clarify pos start
Merge pull request #6770 from adobe/randy/cmv4-issue-6718

Add missing param
Change getCursorPos() back to taking 'start' and 'end' for consistency with getSelection(), but pass them as 'from' and 'to' to CM
Merge branch 'cmv4' into nj/cmv4-editor-multiselect
Merge branch 'nj/cmv4-editor-multiselect' into nj/cmv4-editops-multiselect
Create more generic way to apply multiple edits without having to adjust selections in the interim. Make Delete Line use it.