Changes.tely updated - 2.19.x before Feb 4th 2014 (issue 60490050)

[dak]

https://codereview.appspot.com/60490050/diff/1/Documentation/changes.tely
File Documentation/changes.tely (right):

https://codereview.appspot.com/60490050/diff/1/Documentation/changes.tely#newcode108
Documentation/changes.tely:108: Chord change detection in @code{\repeat}
alternatives now happens in
This is a special case of "several properties at the start of a repeat
alternative are reset to the value at the start of the first
alternative".  This currently also affects the current meter, and the
current measure position.

We probably should also add the current key and active accidentals here,
but at the current point of time it's the above.

https://codereview.appspot.com/60490050/