refactor todo list

[grimmer0125]

motivation: https://github.com/grimmer0125/alphago-zero-tictactoe-js uses numjs but numjs is only runnable on Node.js 10. Target is to refactor it and release a new pacakge.

todo:

• remove nj.images code & dependency which use some broken 3-party packages and fail to build this lib
• ES6
• TypeScript
  • Add parameter types (some do not have yet)
• remove gulp, use https://github.com/bitjson/typescript-starter to build. https://github.com/grimmer0125/d4c-queue uses it
• publish new package
• migrate dependent package,
  • ndarray-gemm (6yr old)
  • ndarray-fft (5yr old)
• add more numpy function, e.g. argmax used in https://github.com/grimmer0125/alphago-zero-tictactoe-js
  • https://www.npmjs.com/package/ndarray-ops
  • https://github.com/grimmer0125/neural_net_typescript seems to use argmax?
• add nj.images back or use https://github.com/donmccurdy/ndarray-pixels decide not include this (probably using module merging in TS)
• use other packages to repalce https://www.npmjs.com/package/expect.js
• remove lodash dependency
• infer data shape & dtype, ref: [ndarray] Infer types from input data array DefinitelyTyped/DefinitelyTyped#53728 only dtype part.
• Add bigint64 / biguint64 support, ref:
  • https://github.com/scijs/ndarray/blob/58f5d8ca9cd37fa708c3996b0e8bbad0937678fc/ndarray.js
  • feat: support BigUint64Array, BigInt64Array, and GenericArray DefinitelyTyped/DefinitelyTyped#56163
• interface compatible with ndarray give up, not good idea