Changes:

2.1.1
- fixed an issue in the portable version update process.
- other improvements.

2.1.0
- can swap PgUp/PgDn keys with Arrow keys (see F1 help).
- fixes and improvements.

2.0.12
- argument after "lock" to specify the path to a PNG image to show.

2.0.11
- app can check if there's a new version available (see F1 help).

2.0.10
- added option to allow media keys (see F1 help).

2.0.9
- added option to unlock on swipe.
- added unlock sound.

2.0.8
- option to disable auto sleep (after idle on wake).
- provided registry key to enable S3 standby.

2.0.7
- fixes and improvements.

2.0.5
- per monitor window scaling according to DPI.
- various fixes and improvements.

2.0.1
- fixed issue, start on login button hidden.

2.0.0
- "OneLock" argument changed to "LockOnce".
- support for high DPI monitors, interface changes.
- can lock on use, can dim desktop on idle.
- hotkey available to turn off the screen.
- backspace key can be used while unlocking the screen.
- hashes are now stored instead of the actual user passwords.