Fix
bug #651: sliding hog firing rope could end up stuck in land right after the rope has attached
Remove string with duplicate placeholder in sk.txt
Duplicate placeholders are not supported yet.
Fix hog can drop more than 2 s. mines if first one was dropped from utility, then stop using that utility
Fixes
bug #701.
Create replay file, run engine, result from it and send it to the server. Not implemented: filtering of engine output.