Made CVARs for volumetric features module.
Made trigger delay attribute for volumes, per player. Count down for n seconds after when a player enter. When leaving a volume trigger delay is aborted.
Made parameter parsing functions; paramtools.inc.
Made functions for setting and parsing generic volume attributes.
Updated header in files to volumetric features and paramtools.inc.
Removed unused knockback functions in zadmin.inc.
Made certain class functions into stock functions.
Fixed error getting default classes on early player connect (bots, source tv, etc.).
Fixed jump boost not resetting height velocity. Changed to add to velocity. Jump from boost platform still doesn't work because the velocity is set too early.
Added check for reserved class names when validating.
Updated class default attributes and jump limits.
Initializing blank strings on function declaration had no effect. Also the parameter can be treated as optional when it's actually not. Reverted to avoid confusion.
Moved class initial event forward into OnConfigsExecuted.
Changed class attributes in default configuration file, and made new example human classes: speedy and light.
Implemented feature for applying human and admin classes. Admin mode is still not implemented.
Extended model path class attribute to support "default" for using default CS models.
Fixed event forward order in OnPlayerSpawn event. The class module depends on infection module.
Fixed class menu crash when there are no admin classes. Admin class and mode options are removed from the menu if there are no classes.
Fixed class menu not closing when selecting 0 (exit) if auto-close CVAR is disabled.
New global variable to separate current admin class and the admin class to be used on next spawn: ClassPlayerNextAdminClass.
Moved hard coded valitation values into defines.
Removed log warning if there are no admin classes. They are optional.
Fixed jump boost adding to height and not multiplying (which were 0 on the player velocity).
