Release 0.16

and fixup PR #35. need a space after not, and
dont rely on $?

Release 0.15

Release 0.14

Need to skip 1840, as it fails on asan and corrupts st.reg_sv.

Release 0.13: fixed concat_pat #26

concat patterns together, and stop using our engine
with the first pattern which is not ours or core.
re_compile to core and fallback to core then.

Problem is when core fails to concat a plugin pattern.
(even if it should not. the PV and flags should be enough, but this
is a core bug we have to work against).

Release 0.12: fix variable expansion

fix op_comp multi pattern without optree, e.g. variable expansion.
see pp_ctl.c: pp_regcomp with STACKED and nargs>1.
This doesn't use an optree.
PCRE cannot handle the variable slicing, fallback.

Release: 0.11

Release 0.10

Release 0.09: Fix split / /, " a b c" special case

split / / does not skip starting whitespace, split " " does.
Closes #17

Release 0.08: support all older libpcre2 versions

Tested with 10.00, 10.10, 10.20, 10.21, 10.22, 10.23, 10.30-dev

Return undef on unsupported pattern_info methods, not 0:
 framesize, hasbackslashc

Remove superfluous PROTOTYPE decls.

Closes #16

Release 0.07: fix 5.10/5.12 XSLoader problem

also check for wrong method values with 5.10, returning UINT32_MAX.
skip the config tests then.