CHANGELOG.md in prop_check-0.18.1 vs CHANGELOG.md in prop_check-0.18.2

@@ -1,4 +1,8 @@
+- 0.18.2
+  - Documentation updates:
+    - PR #18: Adding an example of using prop_check with the `test-unit` testing framework to the README. Thank you, @niku!
+    - PR #17, #18, #21: fixing typos in various parts of the documentation. Thank you, @meganemura, @niku and @harlantwood!
 - 0.18.1
   - Fixes:
     - Compatibility with Ruby 3.2:
       - Use `Random` instead of no-longer-available `Random::DEFAULT` on Ruby 3.x.
       - Ensure when a hash is passed (such as in `PropCheck.forall(hash_of(integer, string)) { |hash| ... }` that when an empty hash is generated, `hash` is still `{}` and not `nil`. ([Ruby 3.x treats `fun(**{})` differently than Ruby 2.x](https://www.ruby-lang.org/en/news/2019/12/12/separation-of-positional-and-keyword-arguments-in-ruby-3-0/#other-minor-changes-empty-hash))