v1.1.6 Patch

Fixed the order of assigning "100 percent" and "goals" to global statistics variables.
Fixed a bug that made it impossible to use the copper key to open the "steam machine" level entrance.
Fixed incorrect calculation of distance between player and entities with "spr_null" mask.
Fixed confetti animation of Christmas gift.
Changelevel entity documentation has been rewritten.
Improved the internal functioning of the secret area at the beginning of the "steam machine" level.