0.2 (September 2017)
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* Change return types of `insertIfAbsent`, `insert` and `delete` to indicate whether or not a value has been inserted/deleted. This is a breaking change, but it should be trivial to adapt your code. There are no changes in performance. Thanks to Tom Shackell for proposing this change.

0.1.1.0 (April 2016)
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* Add `insertIfAbsent` (https://github.com/mcschroeder/ctrie/pull/2)

0.1.0.3 (December 2015)
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* Eliminate a redundant import warning on GHC 7.10
* Loosen dependency bounds

0.1.0.2  (October 2014)
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* Use newer versions of `base` and `atomic-primops`
* Update benchmarks for `criterion 1.0`