EDIT: This is actually already mentioned in the README
This seems like the wrong approach to remap keys on Windows. This tool is using a keyboard hook, so it needs to run always for the remapping to work.
Windows already has a way of remapping keys through the registry that will persist over reboots, without re-running the tool. There are many GUI tools for modifying the key-mapping in registry, I use SharpKeys (https://archive.codeplex.com/?p=sharpkeys)
This seems like the wrong approach to remap keys on Windows. This tool is using a keyboard hook, so it needs to run always for the remapping to work.
Windows already has a way of remapping keys through the registry that will persist over reboots, without re-running the tool. There are many GUI tools for modifying the key-mapping in registry, I use SharpKeys (https://archive.codeplex.com/?p=sharpkeys)