Custom Item Glow stuff

Additions

Custom Items

Custom Item Glows can now have an offset. See #14, provided by pjaryo12.
Added a function to determine the shadow type, being "None", "Soft", and "Hard"

Changes (Non-Breaking)

Custom Items

C4 and F4

Stopped the error when the round ends sometimes if there was a C4/F4 that was being removed.