[nongnu] elpa/buttercup updated (51248623b0 -> 64dc81aa55)

[ELPA Syncer]

elpasync pushed a change to branch elpa/buttercup.

      from  51248623b0 Makefile: Exclude buttercup-pkg.el from ELISP_FILES
       new  e8e99f5ced Escape carriage return in docstring of 
...--print-spec-done-line
       new  abe2eec3af tests: Update temporary test files to use 
lexical-binding: t
       new  9dc02684bf Update buttercup--debugger to ignore :backtrace-base
       new  9bb93d55b9 signal buttercup-dynamic-binding-error when 
lexical-binding != t
       new  64dc81aa55 Do not print stacktraces for certain file load errors


Summary of changes:
 buttercup.el            | 20 +++++++++++++++-----
 tests/test-buttercup.el |  8 ++++----
 2 files changed, 19 insertions(+), 9 deletions(-)