[nongnu] elpa/buttercup updated (c0764a764c -> 51248623b0)

[ELPA Syncer]

elpasync pushed a change to branch elpa/buttercup.

      from  c0764a764c Bump version: 1.33 → 1.34
       new  030e5ebe52 docs: Make the requirement on lexical-binding more 
prominent
       new  51248623b0 Makefile: Exclude buttercup-pkg.el from ELISP_FILES


Summary of changes:
 Makefile              |  2 +-
 README.md             |  6 +++++-
 buttercup.el          |  1 +
 docs/running-tests.md |  2 ++
 docs/writing-tests.md | 24 ++++++++++++++++++++++++
 5 files changed, 33 insertions(+), 2 deletions(-)