QuerySelectField and descendants now use IterableOption base functionality, to eliminate duplicated code.
QuerySelectField and descendants now use IterableOption base functionality, to eliminate duplicated code.

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