⚡️ Feature/cache

[Aratramba]

if there is a pugdoc output file, we could use that to speed things up:

1. Full pugdoc document

Cache whole document and check if it's completely the same. In order to do this we would need to make the examples array an object to be able to do an equal check. Alternatively we could make a cache property with the complete yaml comment. This would result in larger output files (not sure if this is an issue), but could make for faster checks.

2. Compiled example

if the example is the same as cache and before, afterEach and beforeEach are the same, don't compile pug. In order to do this there would need to be more strict checking of example names.

3. Compiled fragment examples

if the fragments are the same as cache and before, afterEach and beforeEach are the same, don't compile fragment pug. In order to do this there would need to be more strict checking of subexample names.

• quick tests so far show that large code bases drop from around 10sec to 1.5sec.