Changelog for dual-tree-0.2.2.1

* 0.2.2.1: 19 October 2019 - Allow semigroups-0.19 - Allow base-4.13 and test with GHC 8.8 * 0.2.2: 16 May 2018 - allow monoid-extras-0.5 - switch from deprecated Control.Newtype to C.N.Generics * 0.2.1.1: 5 April 2018 - allow base-4.11 for GHC-8.4 * 0.2.1: 3 July 2017 - migrate from newtype to newtype-generics dependency This change only affects internals of the library. - improve tests - allow base-4.10 - derive Typeable instead of deprecated Typeable1 - drop support for GHC < 7.8 * 0.2.0.9: 14 February 2016 - allow base-4.9 for GHC-8.0 * 0.2.0.8: 10 November 2015 - allow semigroups-0.18 * 0.2.0.7: 16 September 2015 - Allow semigroups-0.17 * 0.2.0.6: 3 April 2015 - Allow base-4.8 - Allow monoid-extras-0.4 * 0.2.0.5: 04 Dec 2014 - Allow semigroups-0.16 * 0.2.0.4: 28 May 2014 - Allow semigroups-0.15 * 0.2.0.3: 15 May 2014 - Allow semigroups-0.14 * 0.2.0.2: 10 April 2014 - Allow semigroups-0.13 * 0.2.0.1: 27 November 2013 - Allow semigroups-0.12 * 0.2: 5 November 2013 - Expose internal d-annotations via foldDUAL * 0.1.0.4: 26 September 2013 - allow semigroups-0.11 * 0.1.0.3: 15 July 2013 - bump monoid-extras upper bound to allow 0.3 * 0.1.0.2: 28 March 2013 - bump upper bound to allow base-4.7 * 0.1.0.1: 7 January 2013 - bump upper bound to allow semigroups-0.9 * 0.1.0.0: 3 September 2012 Initial release