Fixes

• StringScanner#scan_integer: Fixed a bug that matched data isn't
  updated.

  • GH-130
  • GH-133
  • Reported by Andrii Konchyn
  • Patch by Jean Boussier

• StringScanner#scan_until: Fixed a bug that String pattern
  usage set incorrect match data.

  • GH-131
  • GH-138
  • Reported by Andrii Konchyn
  • Patch by NAITOH Jun

• StringScanner#scan_integer(base: 16): Fixed a bug that 0x<EOS>
  and 0x<NON_HEX_DECIMAL> isn't matched.

  • GH-140
  • GH-141
  • Reported by Andrii Konchyn
  • Patch by Jean Boussier

• Fixed a bug that String pattern doesn't clear named captures.

  • GH-135
  • GH-142
  • Reported by Andrii Konchyn
  • Patch by NAITOH Jun

• StrinScanner#[]: Fixed a bug that String pattern and unknown
  capture group name returns nil instead of raising IndexError
  like Regexp pattern.

  • GH-139
  • GH-143
  • Reported by Benoit Daloze
  • Patch by NAITOH Jun

• StrinScanner#pos and StrinScanner#pos=: Fixed a bug that
  position is treated as int not long.

  • GH-147
  • Patch by Jean Boussier

Thanks

• Andrii Konchyn
• Jean Boussier
• NAITOH Jun