doc(*): update changelog for 3.7 (#149)
doc(*): update changelog for 3.7 (#149)

* doc(*): update changelog for 3.7

* Add `c` suffix.

* Update doc/changes.md

Co-Authored-By: Bryan Gin-ge Chen <6e05157ce10643a7cfc5a3d4e29e4fa5cffe1fc6@gmail.com>

Co-authored-by: Bryan Gin-ge Chen <6e05157ce10643a7cfc5a3d4e29e4fa5cffe1fc6@gmail.com>
digama0/lean,leanprover-community/lean,leanprover-community/lean,dselsam/lean,digama0/lean,digama0/lean,digama0/lean,fpvandoorn/lean,fpvandoorn/lean,fpvandoorn/lean,dselsam/lean,dselsam/lean,dselsam/lean,leanprover-community/lean,leanprover-community/lean,leanprover-community/lean,fpvandoorn/lean,fpvandoorn/lean,dselsam/lean,fpvandoorn/lean,digama0/lean,leanprover-community/lean,dselsam/lean,digama0/lean