LawMaker revision history notes:

Ver 0.1 Beta - First released version.

Ver 0.7 Beta
- Redone object layering for much more accurate layering, account for
  slopes and multiple overlapping sectors on one layer. 
- Fixed muliple object layering bug.
- Added multiselection editing
- Added saving "Stay On Top" state of Sector/Wall/Vertex/Object editors
- Fixed layer change bug
- Added sector/sector multiselection copying
- Added multiple object copying
- Fixed "clipped grid" bug
- Added rectangular select
- Added consistency checker
- Added Sector/Wall/Object find tool
- Added Tools dialog
- Added level header editor
- Added Backup
- Added Dark Forces LEV import
- Added statistics
- Added Copy/Paste
- Added resource picker preview
- Added jump to sector/wall/object tool
- Changed "Publish" and "Test" function to avoid putting junk 
  in your LAB file.