[elpa] externals/plz updated (293cced99d -> 57f1048265)

[ELPA Syncer]

elpasync pushed a change to branch externals/plz.

      from  293cced99d Tests: Disable for Emacs 26.3
       new  49612fdeb5 Tests: Tidy
       new  57f1048265 Release: v0.8


Summary of changes:
 README.org        |  2 +-
 plz.el            |  2 +-
 tests/test-plz.el | 27 ++++++++++++++-------------
 3 files changed, 16 insertions(+), 15 deletions(-)