Added strategies Desperate, Willing, Hopeless, Grim

[marcharper]

Adding strategies/tests Desperate, Hopeless, Willing and Grim in mutual.py

This is a rebase of PR #683 by @ranjinidas

[drvinceknight]

Looks good to me, just missing 4791d13 which adds the new module to the autodoc of the strategies.

[marcharper]

@ranjinidas is going to set the initial plays to random as well, then I think it's ready to merge!

[ranjinidas]

@marcharper and @drvinceknight Can I commit to this PR? Or should I open a new one? I would have to squash all my commits again in that case.

[marcharper]

@ranjinidas You can add to this one.

[drvinceknight]

Can she? Does @ranjinidas have push access to the mutual branch? (just asking in case I'm missing something and you've done something smart @marcharper :))

[marcharper]

If you can't push @ranjinidas, you can make a new branch off this one and open a PR from that branch to this one.

[ranjinidas]

I merged local master with upstream/mutual, then ran git push -u origin upstream/mutual (clearly this was wrong. because it didn't update). How should I push upstream/mutual?

[marcharper]

Well it's a bit of mess since I squashed these commits already. Here's what you'll need to do.

• Rather than change the first play in first_play_test you'll need to have the players return random_choice() in their definitions. This will make first_play_test not work since it depends on the random seed. No worries on that.
• If you want a new commit to merge easily on this branch, try the following.

git fetch origin # gets all the new commits and branches from origin, assuming that's the main repository
git checkout origin/mutual
# This makes a new branch with HEAD at the end of this branch (origin/mutual)
git branch mutual2 # you probably already have a branch named mutual
git checkout mutual2

Make any new commits on mutual2, then push mutual2 to your fork and open a pull request from rajinidas/mutual2 to origin/mutual (use "compare across forks").

Let me know if any issues come up!

If you have troubles I can git cherry-pick your new commits here.

[ranjinidas]

@marcharper Thanks so much for your help! I'll try this today and let you know if there are any issues.

[marcharper]

This is ready for review -- I grabbed @ranjinidas latest commits and added a few more tests.

[drvinceknight]

Could we also check that D is sometimes played?

[drvinceknight]

And for the other two.

Suggestion: instead of a seed could just play 20 first plays and check that both C and D are in there.

[marcharper]

Ok I'll add these in a bit.

[marcharper]

Tests and references added; rebased for bibliography.

[drvinceknight]

Looks great. Thanks @ranjinidas!