FIX: Remove type checking for strings in '_validate_linestyle'#8165

Merged

anntzer merged 2 commits intomatplotlib:masterfrom

afvincent:fix_issue_8145_ls_validation

Mar 12, 2017

Commits on Mar 11, 2017

More robust type checking in '_validate_linestyle', on both Py2 and Py3
afvincent
committed
tests now depend on python version to check cases with bytes args
afvincent
committed