generate versioned documentation from the library code

[NoahZinsmeister]

manual updates to reference documentation is not very robust, and can lead to problems such as #28.

we should migrate to tsdoc to document code, and possibly typedoc to generate reference material to be incorporated into uniswap.org

[callil]

Sounds like it'll generate .md files and we can copy them over?

[moodysalem]

Copying them over is not ideal since we still only represent a single version and it requires manual work, ideally there is a documentation site for each NPM package version that fully documents the classes and methods available in the SDK (generated from inline documentation of the code)