Relax attrs requirement (#59)

* Relax attrs requirement
* Version and changelog
* Formatting
* Add trigger for pull_request

Co-authored-by: Luminaar <kovykmax@gmail.com>

.github/workflows/tests.yaml

@@ -1,6 +1,6 @@
 ---
 name: Test Python package
-on: [push]
+on: [pull_request, push]
 
 jobs:
   test:

CHANGELOG.md

@@ -1,26 +1,30 @@
 # Changelog
 
+## Version 0.10.2
+Changes:
+- Allow higher version of `attrs` (21.0)
+
 ## Version 0.10.1
-- Changes:
-	- Allow higher version of `attrs`
+Changes:
+- Allow higher version of `attrs`
 
 ## Version 0.10.0
-- Changes:
-	- Drop Python3.5 support
+Changes:
+- Drop Python3.5 support
 
 ## Version 0.9.0
-- Changes:
-	- Add the `docker_cleanup` fixture to allow custom cleanup actions for
-	docker-compose
+Changes:
+- Add the `docker_cleanup` fixture to allow custom cleanup actions for
+docker-compose
 
 ## Version 0.8.0
-- Changes:
-	- Add explicit dependencies on `docker-compose` and `pytest`
-	- Stop using deprecated `pytest-runner` to run package tests
+Changes:
+- Add explicit dependencies on `docker-compose` and `pytest`
+- Stop using deprecated `pytest-runner` to run package tests
 
 ## Version 0.7.2
-- Changes:
-	- Update package README
+Changes:
+- Update package README
 
 ## Version 0.7.1
 - Minor packaging related fixes

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = pytest-docker
-version =  0.10.1
+version =  0.10.2
 description = Simple pytest fixtures for Docker and docker-compose based tests
 long_description = file: README.md
 long_description_content_type = text/markdown
@@ -34,7 +34,7 @@ packages=pytest_docker
 
 install_requires =
     pytest >=4.0, <7.0
-    attrs >=19, <21
+    attrs >=19, <22
     docker-compose >=1.27.3, <2.0
 
 [options.extras_require]