Version 2.3.0

• Added string.utf8 option which causes the string encoder to escape all
  valid multibyte UTF-8 characters using the PHP7 unicode code point syntax.
• Added string.binary option which causes the string encoder to encode all
  non UTF-8 strings using a base64_encode().
• Added integer.type option that accepts values binary, octal, decimal
  or hexadecimal which can be used to change the output syntax of integers.
• Added hex.capitalize option that causes all hexadecimal character in
  output to appear in upper case
• Added float.export option that forces float encoder to use var_export
  for encoding floating point numbers
• Float encoder now delegates integer encoding to the integer encoder (to
  allow different integer types).