Test #9209 in th/T9209
Fix #9209, by reporting an error instead of panicking on bad splices.
Fix #9220 by adding role annotations.

This includes a submodule update for `array`.
There is also an added test in libraries/array/tests/T9220.
Test #9151 in typecheck/should_compile/T9151.

This test case should pass right now -- the bug is fixed,
presumably by #9200.
Add release notes for #8100, #9527, and #9064.
Test #9318 in typecheck/should_fail/T9318
Test #9201 in typecheck/should_fail/T9201
Update manual to get rid of bogus `coerce` example (#9788)
Test #9109 in typecheck/should_fail/T9109