v1.4.0

Added

• Support 3.5 as a version option.
• Many, many compatibility fixes for the parser translation layer.
• Handle escapes in named capture names.
• The freeze option is added to the various Prism:: APIs to deeply freeze the AST.
• Properly support it for the parser and ruby_parser translation layers.
• Track the then keyword on rescue nodes.
• Add a multiple_statements? flag to parentheses nodes to support desired defined? behavior.

Changed

• The strings used in the AST are now frozen.
• Fixed handling escaped characters after control sequences in character literals.
• Fix reading off the end of an unterminated global variable.
• Raise a syntax error for defining []= with endless method syntax.
• Increase value of PRISM_DEPTH_MAXIMUM to 10000.
• Freeze Prism::VERSION.
• Fix up rescue modifier precedence.