[balsa] Created tag 2.5.6

[Pawel Salek <pawels src gnome org>]

The unsigned tag '2.5.6' was created.

Tagger: Pawel Salek <pawsa0 gmail com>
Date: 1527832896 +0100

    Balsa-2.5.6 release

Changes since the last tag '2.5.5':

Alan Mortensen (1):
      Updated Danish translation

Albrecht Dreß (2):
      Display time stamps of date-only iCalendar events
      Mitigate EFail vulnerability for Webkit2

Marek Černocký (1):
      Updated Czech translation

Mario Blättermann (1):
      Update German translation

Pawel Salek (2):
      Continue when icons are missing
      Release balsa-2.5.6

Peter Bloomfield (19):
      Fix XML tags
      Silence a gcc gripe about strncpy
      Silence a gcc gripe about snprintf
      Fix the "scroll on click" issue
      Use GResource instead of installed files
      toolbar-factory and -prefs: Simplify API
      COPYING: Add to the repo
      Add contribution guide
      main-window: Manage "reply to group" action
      sendmsg-window: Check when replying to a list
      balsa-index: Emit "index-changed" more often
      message-window.c: Manage "Reply to Group" action
      balsa-index.c: Count and report skipped messages
      balsa-index: Count skipped messages only for list
      imap-handle.c: Do not leak ImapEnvelope.
      mailbox_imap: Do not leak ImapSearchData.
      balsa-index: Do not leak PipeData
      filter-edit-callbacks: Do not leak new_item
      Use g_strcmp0() for NULL-safe comparisons

Piotr Drąg (3):
      Update POTFILES.in
      Update Polish translation
      Update Polish translation

Rafael Fontenelle (2):
      Update Brazilian Portuguese translation
      Update Brazilian Portuguese translation