Add internal data storage and supporting functions
Demote tableOps.(add|del)(Col|Signal) to private
Fix off-by-one in tableOps.delSignal_
Add uiOps.(add|del)(Signal|Col) and skel of .updateDisplayedData
Call tableOps more directly in uiOps.(add|del)(Signal|Col) and add skel of .updateDisplayedCells
Fix function call in uiOps.delSignal
Finish uiOps.updateDisplayedCells()
Fix initial generation of table
Fix function call in uiOps.delCol
Add col and Del col now call uiOps.*
Trying to fix bug on delete cols
Add dataOps.setCellValue_
Add call to dataOps.setCellValue_
Use signal index instead of row index in dataOps.setCellValue_
Create and call tableOps.updateHeader
Throw Errors instead of strings
Fix bug adding/removing columns
When adding columns, copy values from previous column
Merge branch 'internal_data'
Release v0.5.0: internal data storage