* Reset the SIGCHLD signal handler in the forkserver.
Thanks to Kuang-che Wu for the bug report.
* Document that sys.stdin rewinding is necessary in persistent mode.
* Improve the test suite.
+ Improve error messages for missing command-line tools.
* Explicitly set Cython's Python language level to 2.
This might fix build failures with future versions of Cython.
-- Jakub Wilk <jwilkjwilk.net> Thu, 21 Jun 2018 23:17:56 +0200