Changes since tag 3.3.5

commit 92d98a4d5eb9a1d3478e9a11669fee5559bdd55f
Author: Hendrik Leppkes <h.leppkes@gmail.com>
Date:   Sat Jul 15 10:04:58 2017 +0200

    Apparently UNIT_SPELLCAST_CHANNEL_INTERRUPTED never existed, wherever it came from

commit 3a4e4cc7d2d103931fd15303735d262d5319245f
Author: Hendrik Leppkes <h.leppkes@gmail.com>
Date:   Wed Jul 12 14:15:47 2017 +0200

    Switch to ignoring missing locale strings

