New features:
- On firewall changes, now only the affected rules are touched instead of deleting and rebuilding everything each time.
Minor changes:
- The configuration prefix has been made configurable (via environment variable
LETMEIN_CONF_PREFIX) and the cargo build default has been changed from/opt/letmein/etcto/etc. However, thebuild.shscript still uses the/opt/letmein/etcprefix. Therefore, nothing changes for most users. The option makes distribution packaging easier. - API cleanup to make misuse of the protocol API harder.