Add a mode where rub monitors changes to the file system and rebuilds what is necessary if changes occur.
Implementation: - Probably a `--monitor` flag. - Would notify targets when they were changed then execute a new build. - Targets would remove any cache of their old state and re-hash to see if they need to be updated.
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Implementation:
- Probably a `--monitor` flag.
- Would notify targets when they were changed then execute a new build.
- Targets would remove any cache of their old state and re-hash to see if they need to be updated.