Splice ./universe directory into ./

Manually merging:
- README.md: I added the description from universe/README.md into the heading of
  dotfiles/README.md.
- .envrc: dotfiles/.envrc was a superset of universe/.envrc
- .gitignore: Adding some of the ignored patterns from universe/.gitignore to
  dotfiles/.gitignore

Everything else here should be a simple rename.

universe/deepmind/find-rotation-point.py

@@ -1,55 +0,0 @@
-import unittest
-from math import floor
-
-
-def midpoint(a, b):
-    return a + floor((b - a) / 2)
-
-
-def do_find_rotation_point(a, b, xs):
-    i = midpoint(a, b)
-    count = b - a + 1
-
-    if count == 2:
-        if xs[a] > xs[b]:
-            return b
-        else:
-            return -1
-
-    if i in {a, b}:
-        return i
-
-    if xs[a] < xs[i]:
-        return do_find_rotation_point(i, b, xs)
-    else:
-        return do_find_rotation_point(a, i, xs)
-
-
-def find_rotation_point(xs):
-    return do_find_rotation_point(0, len(xs) - 1, xs)
-
-
-# Tests
-class Test(unittest.TestCase):
-    def test_small_list(self):
-        actual = find_rotation_point(['cape', 'cake'])
-        expected = 1
-        self.assertEqual(actual, expected)
-
-    def test_medium_list(self):
-        actual = find_rotation_point(
-            ['grape', 'orange', 'plum', 'radish', 'apple'])
-        expected = 4
-        self.assertEqual(actual, expected)
-
-    def test_large_list(self):
-        actual = find_rotation_point([
-            'ptolemaic', 'retrograde', 'supplant', 'undulate', 'xenoepist',
-            'asymptote', 'babka', 'banoffee', 'engender', 'karpatka',
-            'othellolagkage'
-        ])
-        expected = 5
-        self.assertEqual(actual, expected)
-
-
-unittest.main(verbosity=2)