Add type_erasure to the trunk.
Add type_erasure to the global doc build.
change redirect to point to the global doc build.
Fix typos.  Fixes #8271.
Fix macro name conflict.
Test that overloading on the constness of this works.
test_class& is not const.
Prevent the move constructor from being elided.  This should fix the remaining clang failures in this test case.
Fix wrong test case.
Fix inspect errors.
Fix link to CopyConstructible