Release v0.1.5

[dak2]

Added

• String interpolation type inference (InterpolatedStringNode, InterpolatedSymbolNode, InterpolatedRegularExpressionNode) (#26)
• Parentheses node type inference for parenthesized expressions (#27)
• Qualified name method registration to resolve namespace conflicts (#28)
• Return statement type inference with merge vertex pattern (#29)
• Ternary operator type inference tests (#30)
• Logical operator (&&/||) type inference with union type approximation (#31)
• Class method (def self.foo) type registration and checking (#32)

Changed

• Removed stateless Analyzer class and simplified Ruby FFI surface to module functions (#33)

Deprecated

• clear_cache command (#25)