BaseForm: allow construction with a sequence of 2-tuples in addition to a dict.
BaseForm: allow construction with a sequence of 2-tuples in addition to a dict.

Xender/wtforms,hsum/wtforms,subyraman/wtforms,cklein/wtforms,wtforms/wtforms,jmagnusson/wtforms,pawl/wtforms,Aaron1992/wtforms,crast/wtforms,pawl/wtforms,Aaron1992/wtforms,skytreader/wtforms