update racket HISTORY.txt for v7.4

This commit is contained in:
Matthew Flatt 2019-07-23 13:01:31 -06:00
parent 05c82d877c
commit c1bc49e45b

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@ -1,6 +1,7 @@
Version 7.4
Version 7.4, July 2019
Disabled single-flonum reading by default and added
`read-single-flonum` and `single-flonum-available?`
Bug repairs and other changes noted in the documentation
Version 7.3, May 2019
Bug repairs and other changes noted in the documentation