v0.7.0

• many RegularParser improvements and fixes:
  • backtracks now rely on their offsets only, this is an over 10x performance and memory usage improvement which evens its performance with other parsers while still keeping its feature advantage,
  • subsequent non-token text fragments are now reported as single T_STRING tokens,
  • fixed #70, preg_match_all() with large inputs was sometimes silently failing and returning only subset of matches which reduced the number of reported shortcodes,
  • fixed #58 where invalid token sequences in shortcode content may confuse the parser,
  • inlined content() method effectively halving the call nesting level,
  • disabled xdebug.max_nesting_level during parse() to prevent development environment parsing errors,
• added support for PHPUnit 6.x with fallback translation for PHP 5.x compatibility,
• dropped PHP 5.3 (still supported) and added PHP 7.2 from Travis matrix,
• asterisk * is now a valid shortcode name,
• minor internal Processor improvements,
• minor README updates.