fix synopsis to import ":all" for warning()
add tests that verify the examples that actually pass all their tests
a bit of doc clarification about warnings() vs. warning()
new pluginbundle includes TK automatically
keep track of why this is our minimum bar for core prereq checks
affirm that this code is compatible with perl 5.6
caveat re embedding warning checks in a sub (for ribasushi!!!)
this test can be accomplished without Test::Tester
:no_end_test should have always covered done_testing too
keep $no_end_tests off if it was ever turned off
Test-Warnings-0.009

          - fixed error in synopsis (we do not export anything by default)
          - a caveat added to the documentation regarding embedding warning
            checks inside another sub (this is for you, ribasushi!!!)
          - ':no_end_test' now also covers side effects of done_testing, as
            well as END blocks, making it possible to use the warning(s) subs
            without having an end warning test while using done_testing
            (necessary when combining with the 'if' pragma)
          - END tests will not be added by a subequent use of Test::Warnings
            if a previous one passed ':no_end_test'