[nongnu] elpa/markdown-mode updated (7b374d32fd -> 541bd7b48a)

[ELPA Syncer]

elpasync pushed a change to branch elpa/markdown-mode.

      from  7b374d32fd Update CHANGES.md
       new  8f6974ee0e Support plus sign and Unicode minus sign
       new  edf3f1e55c Merge pull request #681 from 
jrblevin/better-super-sub-script
       new  484d0dae2a Update testing emacs versions
       new  541bd7b48a Merge pull request #682 from jrblevin/ci-emacs


Summary of changes:
 .github/workflows/test.yml |  6 +-----
 CHANGES.md                 |  2 +-
 markdown-mode.el           |  2 +-
 tests/markdown-test.el     | 17 +++++++++++++++--
 4 files changed, 18 insertions(+), 9 deletions(-)