update "racket/HISTORY.txt" for v7.7

This commit is contained in:
Matthew Flatt 2020-04-26 08:47:05 -06:00
parent 1d41f0c5b8
commit 8eab18465c

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@ -1,3 +1,6 @@
Version 7.7, April 2020
Bug repairs and other changes noted in the documentation
Version 7.6, January 2019
Bug repairs and other changes noted in the documentation