After extensive testing under Windows and Linux, Transcrypt is considered ready for production now. The set of supported language features, which already included multiple inheritance, is expanded to include operator overloading as used e.g. in matrix algebra, set comprehensions, lambda's and many other things. Optimizations include call memoizing, compiling e.g. i += 1 to i++ and simplifying for-loops over a closed range of integers to be just as brief and efficient as the matching JS loop. Pip install of Transcrypt and packages for it is now supported. Docs are at http://www.transcrypt.org. Examples have been added for a.o. node.js, D3.js and jQuery. If you like Python for writing readable, maintainable code, no need to develop browser apps in JS anymore. Bugs and feature requests can be submitted at: https://github.com/JdeH/Transcrypt