`runtests.py` now gives a proper exit code
`runtests.py` now gives a proper exit code

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