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Features

• add SyntaxTree::token_limit - SimonSapin, pull/525
  This enables finding out how many tokens were present in a succesful parse,
  which can be useful to choose where to set the limit.

• add Definition::kind() -> &str and Definition::is_executable_definition() - goto-bus-stop, pull/535
  These are new methods on the Definition AST node. kind() returns the kind
  of definition (eg. "ScalarTypeExtension") and is_executable_definition()
  returns true for operation definitions and fragment definitions.

Fixes

• handle escape sequences when reading string contents - goto-bus-stop, pull/541
  The String::from(StringValue) implementation now turns escape sequences like
  \n and \u2764 into their literal characters.