Merge the website into this repo

[Zac-HD]

We've intended since #1224 to eventually merge the website into this repo, and between #2664 and HypothesisWorks/HypothesisWorks.github.io#30 I think we should do so soon. Points to consider:

• Merge the website repo into a /website/ directory in this one, keeping the git history
  Done in #2943: Merge hypothesis.works website repo into monorepo #3333 by @Macavirus 🎉
• Fix any bit-rot in the build system so that builds work nicely
  • master...Zac-HD:website-revival throws out the old Jekyll build entirely to use Pelican (a pure-Python static site generator). Needs a nice theme; otherwise done - including deleting obsolete product and training pages.
  • delete newsletter signup link The newsletter signup does not work correctly HypothesisWorks.github.io#35
  • delete reference to long-dead Java prototype The site mentions proof of concept java version but not ruby version HypothesisWorks.github.io#36
• Add a live-preview for pull requests so that we can check changes
• Point 'production' to the new version (DNS? GitHub Pages config?)
• Ensure that hypothesis.works and hypothesis.readthedocs.org prominently link to each other
  • Maybe we should host docs at docs.hypothesis.works?
• Write more blog posts, e.g. talking about the Ghostwriter or cool case studies
  • article on the "expected result for explicit examples" trick

    unknown_result = object()
    
    @example(x=1, expected=2)
    @example(x=2, expected=unknown_result)
    @given(x=st.integers(), expected=st.just(unknown_result))
    def test(x, expected):
        result = f(x)
        assert 0 <= x  # whatever properties you want
        if expected is not unknown_result:
           assert result == expected  # if we know the exact output, assert that too!

  • article on ghostwriter argument-guessing (Ghostwrite for many more names #3313); complete with list and link to online demo https://zhd.dev/ghostwriter/
  • a "big list of properties" as recipes with Hypothesis, similar to this F# post
  • update Hypothesis article about fixtures interaction with respect to this stackoverflow question.

Doesn't need to be in that exact order, but I think those are the main points.

[asmeurer]

I've always found it confusing the hypothesis has two different websites, which don't even point to one another.