* dgud/stdlib/fix-file-error_log-leak:
  stdlib: Fix leaking files after error_logger:logfile(close)

Introduced when changing state from tuple to record.

* leoliu/export-catch_exception:
  Export shell:catch_exception/1 as documented

* bjorn/cuddle-with-tests: (23 commits)
  rand_SUITE: Speed up basic_stats/1
  base64_SUITE: Speed up roundtrip/1
  lists_SUITE: Test lists:concat/2
  lists_SUITE: Test lists:split/2
  lists_SUITE: Add a test case for lists:prefix/2
  lists_SUITE: Add hof/1 to test all high-order functions
  lists_SUITE: Add test for lists:takewhile/1
  lists_SUITE: Run test cases in each group in parallel
  lists_SUITE: Test lists:keyreplace/4
  lists_SUITE: Extend flatten/1 test to also test flatlength/1
  lists_SUITE: Correct test of lists:flatten/2
  id_transform_SUITE: Modernize test suite
  io_proto_SUITE: Speed up determination of default shell
  io_proto_SUITE: Refactor up rtnode() and friends
  gen_event_SUITE: Remove unnecessary sleep calls
  proc_lib: Improve coverage for crash/1
  proc_lib_SUITE: Eliminate compiler warnings
  io_SUITE: Add coverage/1 to completely cover io_lib_pretty
  io_SUITE: Extend coverage of code for testing printable chars
  io_SUITE: Speed up test for bad +pc option
  ...

Refactor basic_stats/1 into three separate test cases that can be
run in parallel.

Refactor roundtrip/1 into 4 test cases that can be run in parallel.
Assuming that there are 4 cores available, the group of 4 test
cases will run at roughly one fourth of the time for the original
test case.