[RFC] About the version 5.x

[ZLY201]

In previous versions, I relied too much on C++ STL.

In fact, many designs in C++ STL are not suitable for Javascript, especially in the function name specification.

This RFC (Request for Comment) outlines the all updates to js-sdsl which will be done in 2023.

• Modify the names of all apis to conform to the specification in javascript.
• Organize the code of the red-black tree or perform simple refactoring to make its code structure clearer. perf: optimize tree container #159
• If possible further optimize hash table performance, at least as a good polyfill.
• Improve performance of iterators for sequential containers, especially Deque.
• Add algorithm and awesome module.
• Change oop to functional programming. [Refused]
• Change ESM building target to ES6. ESM build has classes downleveled to functions, but CJS build does not #158

Although this is a RFC for 5.x, I think some works could be done in version 4.x.