I have just updated derp an the new button at the bottom right you will see is the long awaited anti-stealth hack which allows you to see anyone in stealth.
A preview of it can be found

( names were removed to prevent players helping test from being banned ).
Edit:
Meh has gotten an update to v0.3.
- Added nametag fog disabling to fog tickbox.
- Added stealth removal to fog tickbox ( shows players in stealth ).
- Cleaned up the UI, aligned everything, double checked to make sure no bans or issues.
- Updated some old code.