Onigmo 6.1.3

Changes from Onigmo 6.1.2 are listed below.

Security fixes

• PR #91
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9224
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9226
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9227
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9228
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9229

Bug fixes

• Add a declaration of onig_end() in onigmoposix.h
• Fix .*\b (Issue #96)
• Don't include shift_jis.c from windows_31j.c (Issue #88)