- Setting `QemuSmp=` to `0` will now make qemu use all available CPUs
- Free page reporting and discard request processing are now enabled by
default in VMs spawned by `mkosi qemu`.
+- Added `ToolsTreeCertificates=` to allow configuring whether to use
+ certificates and keys from the tools tree (if one is used) or the
+ host.
+- Added `never` for `CacheOnly=` to specify that repository metadata
+ should always be refreshed.
+- Added `ProxyExclude=` to configure hostnames for which requests should
+ not go through the configured proxy.
+- Renamed the `none` option for `CacheOnly` to `auto`.
+- The default tools tree is now reused on incremental builds.
+- Added `VolatilePackages=` and `InitrdVolatilePackages=` to configure
+ packages that should be installed after executing build scripts and
+ which should not be cached when using `Incremental=`.
## v22