Log Message:
Update to 0.080

Upstream changes:
0.080           2021-04-16      T. R. Wyant
    All uses of the postderef argument to new() now warn.

0.079           2021-03-26      T. R. Wyant
    Get prerequisites up to snuff, and add xt/author/prereq.t to ensure
    they stay that way.

    Add rt.cpan.org back to bug reporting methods. Long live RT!

0.078           2021-01-28      T. R. Wyant
    Allow CPAN to index Script_Run, Atomic_Script_Run, since they made
    it into a production release.

    Allow {,3} and { 0 , 3 } as quantifiers, requiring at least Perl
    5.33.6. Previously these parsed as literals. This parse will be
    retracted if it does not make it into 5.34.0.

0.077           2021-01-14      T. R. Wyant
    Add Travis CI testing.

    Use GitHub as bug tracker. R.I.P. rt.cpan.org.

0.076           2020-11-28      T. R. Wyant
    Correct (I hope) detection of \K in nested assertions.

    Variable-length look-behind is version 5.029009.

    Look-behinds quantified longer than 255 characters are an error, and
    are made into unknown tokens or structures. I ended up refactoring
    the PPIx::Regexp::Token::GroupType class initialization for the
    latter two changes.

0.075           2020-10-08      T. R. Wyant
    Warn on first use of attribute 'postderef'.