Features

• improve elimination of unused variables (b1cfa71)
• reduce entropy of name mangling (689f8f5)

Bug Fixes

• __proto__ accessor (e136155)
• assignment operator (bbed9b1, 2549377)
• function declaration (a7698f8)
• lexical declaration (2cff7c9)
• logical assignment operator (ae51f76)
• optional chaining operator (60f3b55, e044293)
• template literal (7576048)