[elpa] externals/embark updated (8245308630 -> 1db978b1fe)

[ELPA Syncer]

elpasync pushed a change to branch externals/embark.

      from  8245308630 Use the key custom type for string that must be 
key-valid-p
       new  05a27646bd Add bindings for org-narrow-to-block
       new  753c880564 Add embark--ignore-target idempotently to target 
injection hooks
       new  28e1be702d Add action keymap for org-headings
       new  74f682255f Unzebra
       new  3064ea0b35 Remove mentions of zebra mode from documentation
       new  1db978b1fe Merge branch 'unzebra'


Summary of changes:
 README.org    |  8 +------
 embark-org.el | 43 +++++++++++++++++++++++++++++++-----
 embark.el     | 70 +++--------------------------------------------------------
 embark.texi   |  8 +------
 4 files changed, 42 insertions(+), 87 deletions(-)