People like Karen and myself are confused by the placeholder, it seems like you don't have to change the master value. Also the to and from should be more prominent.
Adds feature: get a diff via API.
Link issues from comments and automatically close them

Any mention of Issues, MergeRequests, or Commits via GitLab-flavored markdown
references in descriptions, titles, or attached Notes creates a back-reference
Note that links to the original referencer. Furthermore, pushing commits with
commit messages that match a (configurable) regexp to a project's default
branch will close any issues mentioned by GFM in the matched closing phrase.
If accepting a merge request would close any Issues in this way, a banner is
appended to the merge request's main panel to indicate this.
Merge pull request #4507 from smashwilson/linking-issues

Linking objects from GFM references
Fix issue when developers are able to push to protected branch

When that branch contain a '/' in the branch name.
Fix for git over HTTP
Mars theme for generated admin account
Set iid in fixtures. Add rake dev:setup for development
Add placeholders from and to
Merge branch 'userfriendly-compare-page' of /home/git/repositories/gitlab/gitlabhq
Better style for blockquote text in comments
Merge pull request #4892 from Aigeruth/feature/api-add-diff

Feature: get the diff of a commit via API.
Add redirect from Issue#id to Issue#iid
Allow markdown tables
Remove old migration tasks

You should update to 6.0 before proceed with update to higher version.
So its no reason to keep old tasks any more.
It should be still available in 6-0-stable but not in master
Add test and docs for markdown tables
Fix md help table header
Remove bottom margin for text in event note
[#4821] - Fix some missing iids
Add event filter for group and project show pages
Merge pull request #4897 from rtripault/iids

[#4821] - Fix some missing iids