Log Message:
Update ruby-parser to 3.10.1.

=== 3.10.1 / 2017-07-21

* 2 bug fixes:

  * Fixed identification of parser version whether Ruby##Parser or Parser::V##.
  * Fixed squiggly heredoc lexing when using 24 parser.

=== 3.10.0 / 2017-07-17

* 4 minor enhancements:

  * Added support for 'squiggly heredocs' (indented content). (jjoos)
  * Bumped oedipus_lex to ~> 2.5.
  * Bumped sexp_processor to ~> 4.9.
  * Made STRICT_SEXP=1 safe: converted indexed sexps to semantic calls where needed.

* 5 bug fixes:

  * Clear and restore cmdarg stack around defs args and body. (presidentbeef)
  * Conditionalize use of sexp_body= to make it compatible w/ sexp_processor 4.9.0
  * Fix up line numbers in strings with newlines and `#`. (presidentbeef)
  * Fixed line numbers of resbodies.
  * Fixed some tracking of lexical state. Fixes bug #249.