Complex dict value cannot have equal sign, but simple dict can.

[zhu]

django-environ/environ/environ.py

Lines 453 to 456 in 84bd435

	[val.split('=') for val in value.split(';') if val]
	))
	elif cast is dict:
	value = dict([val.split('=', 1) for val in value.split(',') if val])

simple dict use val.split('=', 1)
complex dict use val.split('=')