New version and changelog

Fixed bug where a regex that started with raised a syntax error

Fixed bug where, in some situations, scanner allowed invalid characte…

…rs after a slash. Fixes #67

Fixed bug when parsing sequence expressions using older ES versions. F…

…ixes #65

Fixed rendering of switch cases wrapping them in curly braces if they…

… contain let or const declarations. Fixes #61

Fixed rendering of let and const inside if, for and while that always…

… require brackets. Also refactored the algorithm that detects if brackets are required. Fixes #60

Fixed bug where async keyword was lost when rendering an object async…

… method. Fixes #58

Updated changelog and version

New version and changelog

Update License year