Bug report

Bug summary

The xkcd context manager does not reset the config anymore

Code for reproduction

importmatplotlib.pyplotaspltwithplt.xkcd():plt.figure()plt.plot([1,2,3])plt.savefig('xkcd.png',dpi=300)plt.figure()plt.plot([1,2,3])plt.savefig('not_xkcd.png',dpi=300)

Actual outcome

Both figures are in xkcd style

Expected outcome
Second figure should be using default style

Matplotlib version

• Operating system:
• Matplotlib version: 2.1
• Matplotlib backend (print(matplotlib.get_backend())): Qt5Agg
• Python version: 3.6

using anaconda