update changelog; bump version

Author: dilpath

CHANGELOG.md

@@ -2,6 +2,21 @@
 
 ## 0.1 series
 
+### 0.1.29
+
+Features:
+* Method to unflatten simulation dataframe produced by flattened PEtab problem
+  by @dilpath in https://github.com/PEtab-dev/libpetab-python/pull/171
+* Methods to simplify PEtab problems
+  by @dweindl in https://github.com/PEtab-dev/libpetab-python/pull/172
+
+Fixes:
+* Fix relative paths for model files
+  by @dilpath in https://github.com/PEtab-dev/libpetab-python/pull/173
+
+**Full Changelog**
+https://github.com/PEtab-dev/libpetab-python/compare/v0.1.28...v0.1.29
+
 ### 0.1.28
 
 * Fixed validation for output parameters columns in the condition table

petab/version.py

@@ -1,2 +1,2 @@
 """PEtab library version"""
-__version__ = '0.1.28'
+__version__ = '0.1.29'