Accept parserinfo instances as the parser parameter.
Accept parserinfo instances as the parser parameter.

abalkin/dateutil,Bachmann1234/dateutil,abalkin/dateutil,adamgreig/python-dateutil,pganssle/dateutil-test-codecov,jenshnielsen/dateutil,mjschultz/dateutil,pganssle/dateutil-test-codecov,sprymix/python-dateutil,emsoftware/python-dateutil,sprymix/dateutil