Method Conflicts on munit_test_case

[RogerFretwell]

munit_test_case may be deprecated but recent changes broke it unnecessarily.

In particular the changes left a number of unresolved conflict methods on munit_test_case.

Please resolve the conflicts.

The conflict details:

print_conflict_methods(munit_test_case)
$
method assert_true() *** conflict(assert munit_assert ) *** assert_true() in munit_test_case
method assert_unset() *** conflict(munit_assert assert ) *** assert_unset() in munit_test_case
method assert_not_unset() *** conflict(assert munit_assert ) *** assert_not_unset() in munit_test_case
method assert_is() *** conflict(assert munit_assert ) *** assert_is() in munit_test_case
method assert_is_not() *** conflict(munit_assert assert ) *** assert_is_not() in munit_test_case