Bump version to 0.7.5 and add CHANGELOG.md

Change-Id: Iae7069e3e8d00e6944198a651f8767a109226987
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..6d3db0d
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Version history
+
+## 0.7.5
+
+- Updates recommended RKorAPClient version to 0.7.5
+  - fixes collocation scores for lemmatized node or collocate queries
+- Automatically converts again between rpy and py objects, most importantly between Pandas and R data frames, also with newer versions of [rpy2](https://github.com/rpy2)
+  - Fixes "Hello world" example in Readme.md
+- Updates references / citation information
+- Changes corpusStats to return a pandas.DataFrame by default
+- Advertises Python 3.10 as supported
+- Adds interactive plot examples using [Vega-Altair](https://altair-viz.github.io/)
+
+## 0.7.1
diff --git a/setup.py b/setup.py
index 9fc5a97..2f195bf 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="KorAPClient",
-    version="0.7.1.9000",
+    version="0.7.5",
     author="Marc Kupietz",
     author_email="kupietz@ids-mannheim.de",
     description="Client package to access KorAP's web service API",