[elpa] externals/standard-themes updated (e71fdd5d31 -> b760920423)

[ELPA Syncer]

elpasync pushed a change to branch externals/standard-themes.

      from  e71fdd5d31 Document support for ztree package
       new  7b0d09058e Do not underline the gnus-button
       new  b760920423 Add support for the mu4e-thread-fold-face


Summary of changes:
 standard-themes.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)