Log Message:
Update to 0.088

Upstream changes:
0.088           2023-02-28      T. R. Wyant
    Remove support for (**{ ... code ... }).  This was introduced in
    Perl 5.37.8 along with a single-splat version.  The double-splat
    version was removed without deprecation in Perl 5.37.9, so it is
    being removed without deprecation here as well, per my stated policy
    about development functionality.  The single-splat version still
    exists (and is documented) in Perl 5.37.9, and in this package.

0.087           2023-01-28      T. R. Wyant
    Add support for code in optimized regex, a.k.a. (*{...}).  This
    involved making the recognition of backtracking control more
    specific, since it also uses (?*...).

    If (*{...}) and (**{...}) are removed from Perl before Perl 5.38.0,
    support for them will be removed from this package.

0.086           2022-12-13      T. R. Wyant
    Add width(), which returns the number of characters matched. Note
    that an indefinite upper boumd is represented as IEEE 754 Inf if
    that appears to be supported; otherwise by a singleton object
    overloaded to allow stringification, numification, and numeric
    tests.

    Use width() to enhance the detection of variable-width look-behinds.

    Serious clean-up on accepts_perl() subsystem.