Merge pull request #32 from aio-libs/test-on-0.20.2

add test configuration to test on aiohttp==0.20.2

Author: rutsky

.travis.yml

@@ -9,7 +9,8 @@ install:
   - pip install -Ur requirements-dev.txt
   - python setup.py develop
   # aiohttp git repo has only *.pyx files, so install cython too.
-  - '[ -z "$LATEST_ASYNCIO" ] || pip install -U cython git+https://github.com/KeepSafe/aiohttp.git'
+  - '[ -z "$MASTER_AIOHTTP" ] || pip install -U cython git+https://github.com/KeepSafe/aiohttp.git'
+  - '[ -z "$AIOHTTP_0_20_2" ] || pip install aiohttp==0.20.2'
 
 script:
   - python setup.py test
@@ -18,5 +19,11 @@ env:
   matrix:
     # PYTHONASYNCIODEBUG environment variable is considered as enabled if it
     # is any non empty string.
-    - PYTHONASYNCIODEBUG=X LATEST_ASYNCIO=
-    - PYTHONASYNCIODEBUG=  LATEST_ASYNCIO=X
+    - PYTHONASYNCIODEBUG=  MASTER_AIOHTTP=  AIOHTTP_0_20_2=
+    - PYTHONASYNCIODEBUG=x MASTER_AIOHTTP=  AIOHTTP_0_20_2=
+    - PYTHONASYNCIODEBUG=  MASTER_AIOHTTP=x AIOHTTP_0_20_2=
+    - PYTHONASYNCIODEBUG=x MASTER_AIOHTTP=x AIOHTTP_0_20_2=
+    - PYTHONASYNCIODEBUG=  MASTER_AIOHTTP=  AIOHTTP_0_20_2=x
+    - PYTHONASYNCIODEBUG=x MASTER_AIOHTTP=  AIOHTTP_0_20_2=x
+    - PYTHONASYNCIODEBUG=  MASTER_AIOHTTP=x AIOHTTP_0_20_2=x
+    - PYTHONASYNCIODEBUG=x MASTER_AIOHTTP=x AIOHTTP_0_20_2=x