Trim trailing whitespace

This patch cleans all redundant trailing whitespace across the
repository except for the icalendar files.

Adding in Call for Papers for php[tek] 2016 which launched on Dec 15th. I sat on this for a couple days not wanting to again push the php 7 announcement down, nor thinking about backdating the annou

Adding in Call for Papers for php[tek] 2016 which launched on Dec 15th. I sat on this for a couple days not wanting to again push the php 7 announcement down, nor thinking about backdating the announcement to 'before the CfP even opened' which would be awkward. So now instead with the new 7.0.1 announcement, I was able to just backdate it to be right before that announcement (as if this went out yesterday). That way it doesn't bump any real news down. And it was actually 'pushed' on the day that I normally would have anyway. Should be a win-win here.

show more ...