changes.rst: Fixed release year (!279 · Merge requests · openpyxl / openpyxl

Bitbucket Importer requested to merge bitbucket/declined-pr-279 into branch/2.5 Aug 30, 2018

Can't show this merge request because the source branch bitbucket/declined-pr-279 is missing from project openpyxl/openpyxl. Close this merge request or update the source branch.