update changelog

CHANGELOG.rst

@@ -1,14 +1,29 @@
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-[0.1.0] - 2020-02-24
+[0.1.1] - 2020-02-28
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-Early Alpha release made available via PyPI for community testing and evaluation.
+- Improve user experience with more progress bars and logging.
+- Slightly change traversal method in outside and outside maximization algorithms,
+  this should only affect inference on inferred tree sequences with large numbers 
+  of nodes at the same frequency.
+- Improve reporting of current project version
+- Use appdirs for default caching location
+- Prevent dating tree sequences with dangling nodes
 
-Please don't use this version in published works.
 
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 [0.1.1] - 2020-02-25
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 Bugfix release: resolve issue with precalculating prior values.
 
+
+--------------------
+[0.1.0] - 2020-02-24
+--------------------
+
+Early Alpha release made available via PyPI for community testing and evaluation.
+
+Please don't use this version in published works.
+
+