Add blog post "Metafacture-core release 5.7.0" (metafacture-core#502)

content/blog/metafacture-5.7.0/index.md

@@ -0,0 +1,33 @@
+---
+title: Metafacture-core release 5.7.0
+date: "2023-11-24T15:35:03.2300Z"
+description: "This is about changes coming with the metafacture-core release 5.7.0"
+authors: [{lastname: "Christoph",
+           firstname: "Pascal"}]
+---
+
+*Preamble*
+
+This post describes the new developments in `metafacture-core release 5.7.0` since the [release of
+ metafacture-core-5.6.0](https://blog.metafacture.org/metafacture-core-5.6.0/) in June 2023.
+
+## Table of Contents
+
+```toc
+# this will be replaced by the toc
+```
+
+## Changes
+
+### New Features
+
+- Morph function: Switch from java.net.URLEncoder to guavas PercentEscaper to be conform to RFC 3986 [#490](https://github.com/metafacture/metafacture-core/issues/490)
+
+### Bug fixes
+
+- IO: Increment count before starting new file in ObjectFileWriter [#501](https://github.com/metafacture/metafacture-core/pull/501)
+
+### Others
+
+- Add description to "wait-for-inputs" [metafacture-documentation#30](https://github.com/metafacture/metafacture-documentation/issues/30)
+