[Snippet] Figured out CalcView and ViewModel position/angles

[Gmod4phun]

I was experimenting with camera attachments again and I got it working: gmod_vm_camera_att_view

The trick is to store the previous angle somewhere, and in the next frame subtract it from the current attachment angle, and then add the player:EyeAngles()

Works in both GM:CalcView() and SWEP:CalcView(), position and angle, bones and attachments.