D&D5e 4.X Compatability

[friction1]

Sheets aren't opening. This is the only red error I saw in the console. This break was expected, but just sharing in case someone is working on it.

[friction1]

Info from 5E update

[kontokontovtt]

Hello Is there any updates about the support for system version 4? I really don't want to miss this module, its the best sheet for the DM out of all @zeel01

[zeel01]

Merged #239