-The currently published `IETF draft`_ describes the logic of version 1.2.0,
-earlier library and draft versions do not match each other that well.
+1.2.1: Updated the readme document.
+
+1.2.0: Changed the output structure to use Goal Result as described in draft-05.
+
+1.1.0: Logic improvements, independent selectors, exceed ratio support,
+better width rounding, conditional throughput as output.
+Implementation relies more on dataclasses, code split into smaller files.
+API changed considerably, mainly to avoid long argument lists.
+
+0.4.0: Considarable logic improvements, more than two target ratios supported.
+API is not backward compatible with previous versions.
+
+0.3.0: Migrated to Python 3.6, small code quality improvements.
+
+0.2.0: Optional parameter "doublings" has been added.
+
+0.1.1: First officially released version.