Added a much needed feature

Added a menu for changing settings, accessible with the "viewmod_menu" console command

improved thirdperson

added option to let weapons overwrite the position and angles (for aiming down the sights and whatnot)

possibly fixed nil head bone issue

fixed nil entity error

fixed error when weapons don't return angle and position

fixed iron sights with most sweps

fixed vehicle thirdperson

fixed crossbow zoom

fixed camera

fixed crosshair