- Added advanced/experimental command option, 'Do not execute this command if it is already
running'. This keeps the current command from executing if another instance is already
in progress.
- Added option, 'Do not execute this command if it is already running' to the, 'Execute Another
Command' screen. This will prevent a command from executing if it's currently running.
Thinking about longer-running commands with little feedback and stuff that should literally only run as a single instance, like plot neutron route
.