Update rbrito's email address.

After more than 1/4 century, my email address is going to die. ☹

I'm "feeling homeless" now. ☹ Suggestions for privacy-oriented email hosts
are highly welcome.

coursera/coursera_dl.py

@@ -3,7 +3,7 @@
 
 # Authors and copyright:
 #     © 2012-2013, John Lehmann (first last at geemail dotcom or @jplehmann)
-#     © 2012-2020, Rogério Theodoro de Brito (r lastname at ime usp br)
+#     © 2012-2020, Rogério Theodoro de Brito
 #     © 2013, Jonas De Taeye (first dt at fastmail fm)
 #
 # Contributions are welcome, but please add new unit tests to test your changes

setup.py

@@ -88,7 +88,7 @@ def read_file(filename, alt=None):
     name='coursera-dl',
     version=__version__,
     maintainer='Rogério Theodoro de Brito',
-    maintainer_email='rbrito@ime.usp.br',
+    maintainer_email='rbrito@gmail.com',
 
     license='LGPL',
     url='https://github.com/coursera-dl/coursera-dl',