KeeperRL v1.0 hotfix 17 is out

Mods are now sorted by the number of up votes.
Added two alternative stair types, custom modded stairs are now also supported.
Added scrollbars to the building menu pop-up, if the items won't fit on the screen.
Added ClaimTile effect for better support of custom starting structures in mods.
Fixed particle effects in the ascii mode.
Updated game credits.