[elpa] externals/ement updated (5be1e07002 -> 726d17b082)

[ELPA Syncer]

elpasync pushed a change to branch externals/ement.

      from  5be1e07002 Merge: Basic m.video support
       new  6bd1091757 Fix: (-defevent "m.room.avatar") Warn for unreadable 
images
       new  c0b922bcc5 Fix: (ement-room-list) When no rooms are joined
       new  4d46aa0659 Change: (ement-room--member-names-and-ids) Use timeline 
not EWOC
       new  1bad05695c Change: Improve completion by looking for prefixes
       new  cb95f5e0e8 Fix: (ement-room-init-compose-buffer) Enable member/room 
completion
       new  726d17b082 Docs: Explain mentions and completion


Summary of changes:
 README.org         |   6 ++-
 ement-room-list.el | 126 +++++++++++++++++++++++++++--------------------------
 ement-room.el      |  23 +++++-----
 ement.el           |  26 ++++++-----
 4 files changed, 97 insertions(+), 84 deletions(-)