Support plain Django Forms

[Archmonger]

Is your feature request related to a problem? Please describe.
Currently FormField only supports django.forms.ModelForm, and has no variant that works with a plain django.forms.Form

Describe the solution you'd like
Either create a variant, or have the base ColorField be a Form compatible field.

from colorfield.fields import ColorField
from django import forms

class BasicForm(forms.Form):
    color = ColorField(default='#FF0000')

Describe alternatives you've considered
N/A

Additional context
N/A

[fabiocaccamo]

@Archmonger thank you for reporting this, would you like to submit a PR?

[Archmonger]

I don't believe I'll have the bandwidth to PR this for at least the next 2 years.

[fabiocaccamo]

@Archmonger I see now that you are from California, stay safe.

[fabiocaccamo]

@Archmonger available in 0.12.0 version.