* Fix#46
Draft Implementations
* Add docs
* Fixup
* Add type declaration and test
* Fixup tests
* Fixup test
* Format
* Add examples in docs
* Update fft.js
Edit example in docs (`math.fft` returns complex matrix).
* Update ifft.js
Edit example in docs (`math.ffti` returns complex matrix).
* Update fft.js
Edit docs examples, representation of complex number from `a+bi` to `{re:a, im:b}`
* Update ifft.js
Edit docs examples, representation of complex number from `a+bi` to `{re:a, im:b}`
* Update index.ts
Edit test.
Add test for `math.ifft`
`math.fft` returns complex matrix.
* Update index.ts
Use `approx.deepEqual` instead off `assert.deepStrictEqual`.
* Update index.ts
Format code
* Update index.ts
Use `assert.ok(math.deepEqual(...))` instead of `approx.deepEqual`.
* Update index.ts
Format
* Update index.ts
Typo: replace `approx` with `assert`.
Co-authored-by: Jos de Jong <wjosdejong@gmail.com>
