pluginprocess-improvements: add release notes
@@ -303,6 +303,19 @@ Thanks to Daniel Bugl.
- <<TODO>>
+### pluginprocess
+
+- The library [`pluginprocess`](http://master.libelektra.org/src/libs/pluginprocess) that is used to
+ execute plugins run inside own processes has been improved. This is useful as some plugins like
+ haskell-based plugins or [`python`](http://libelektra.org/plugins/python) can only be started once
+ inside a single process, while libelektra may call a plugin several times. The library now uses an
+ improved communication protocol that separates between pluginprocess-related data and keysets
+ passed to plugins. This avoids any possible name clashes between keys used by a plugin and keys
+ used by pluginprocess.
+ The documentation of the plugin has been improved as well, some mistakes were corrected and it
+ should be more clear how to store plugin data besides pluginprocess's data structure.
+ Tests have been added to the library to ensure its correct functionality. *(Armin Wurzinger)*
+
## Bindings
- A new I/O binding for [ev](https://www.libelektra.org/bindings/io_ev) has been
