Bump version, update changelog

Author: hermansje

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 All notable changes to the pythonwhat project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## 2.18.1
+
+### Fixed
+
+- Local setup with `setup_state` now works correctly (e.g. when the PEC contains a list comprehension)
+
 ## 2.18.0
 
 - Add optional `force_diagnose` parameter to `test_exercise` to force passing the `diagnose` tests in `check_correct`.
@@ -333,4 +339,4 @@ s.check_object('x').has_equal_value()
 
 ### Removed
 
-- There is no support for `keep_objs_in_env`, as nobody is using it.
+- There is no support for `keep_objs_in_env`, as nobody is using it.

pythonwhat/__init__.py

@@ -1,3 +1,3 @@
-__version__ = '2.18.0'
+__version__ = '2.18.1'
 
 from .test_exercise import test_exercise, allow_errors