bump dependencies and manage with pip-tools

.travis.yml

@@ -3,19 +3,19 @@ python:
     - 3.4
     - 3.5
     - 3.6
-    - 3.7-dev
+    - 3.7
+    - 3.8-dev
     - pypy3.5
+    - pypy3.6
 env:
     - EIDER_WS_LIB=aiohttp
     - EIDER_WS_LIB=websockets
 matrix:
-    exclude:
-        # websockets 4.0.1 has a SyntaxError under python 3.7
-        - python: 3.7-dev
-          env: EIDER_WS_LIB=websockets
+    allow_failures:
+        - python: 3.8-dev
 install:
     - pip install .
-    - pip install -r requirements-dev.txt
+    - if [[ $TRAVIS_PYTHON_VERSION == '3.4' ]]; then pip install -r requirements-dev-py34.txt; else pip install -r requirements-dev.txt; fi
 script:
     - pytest
     - flake8

requirements-dev-py34.txt

@@ -0,0 +1,38 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --output-file=requirements-dev-py34.txt requirements-dev.in
+#
+aiohttp==2.3.10
+async-timeout==2.0.1      # via aiohttp
+atomicwrites==1.3.0       # via pytest
+attrs==19.2.0             # via pytest
+chardet==3.0.4            # via aiohttp
+colorama==0.4.1           # via pytest
+coverage==4.5.4           # via pytest-cov
+entrypoints==0.3          # via flake8
+flake8==3.7.8
+idna-ssl==1.1.0           # via aiohttp
+idna==2.8                 # via idna-ssl, yarl
+importlib-metadata==0.23  # via pluggy, pytest
+mccabe==0.6.1             # via flake8
+more-itertools==7.2.0     # via pytest, zipp
+msgpack==0.6.2
+multidict==4.5.2          # via aiohttp, yarl
+packaging==19.2           # via pytest
+pathlib2==2.3.5           # via importlib-metadata, pytest
+pluggy==0.13.0            # via pytest
+py==1.8.0                 # via pytest
+pycodestyle==2.5.0        # via flake8
+pyflakes==2.1.1           # via flake8
+pyparsing==2.4.2          # via packaging
+pytest-cov==2.7.1
+pytest==4.6.5
+scandir==1.10.0           # via pathlib2
+six==1.12.0               # via packaging, pathlib2, pytest
+typing==3.7.4.1           # via flake8
+wcwidth==0.1.7            # via pytest
+websockets==7.0
+yarl==1.1.1
+zipp==0.6.0               # via importlib-metadata

requirements-dev.in

@@ -0,0 +1,14 @@
+# Packages listed here aren't strict dependencies of eider, but are needed to
+# run the tests.
+
+aiohttp>=2.3.10
+flake8
+msgpack
+pytest>=3
+pytest-cov
+
+# websockets 8.0 drops Python 3.4 & 3.5 support
+websockets>=7,<8
+
+# yarl 1.2 drops Python 3.4 support
+yarl>=1.1,<1.2

requirements-dev.txt

@@ -1,14 +1,34 @@
-# Packages listed here aren't strict dependencies of eider, but are needed to
-# run the tests.
-
-aiohttp>=2.3.10
-flake8
-msgpack
-pytest>=3
-pytest-cov
-
-# websockets 4.0.1 has a SyntaxError under python 3.7
-websockets>=4;python_version<"3.7"
-
-# yarl 1.2 drops Python 3.4 support
-yarl>=1.1,<1.2
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile requirements-dev.in
+#
+aiohttp==3.6.1
+async-timeout==3.0.1      # via aiohttp
+atomicwrites==1.3.0       # via pytest
+attrs==19.2.0             # via aiohttp, pytest
+chardet==3.0.4            # via aiohttp
+colorama==0.4.1           # via pytest
+coverage==4.5.4           # via pytest-cov
+entrypoints==0.3          # via flake8
+flake8==3.7.8
+idna==2.8                 # via yarl
+importlib-metadata==0.23  # via pluggy, pytest
+mccabe==0.6.1             # via flake8
+more-itertools==7.2.0     # via pytest, zipp
+msgpack==0.6.2
+multidict==4.5.2          # via aiohttp, yarl
+packaging==19.2           # via pytest
+pluggy==0.13.0            # via pytest
+py==1.8.0                 # via pytest
+pycodestyle==2.5.0        # via flake8
+pyflakes==2.1.1           # via flake8
+pyparsing==2.4.2          # via packaging
+pytest-cov==2.7.1
+pytest==5.2.0
+six==1.12.0               # via packaging
+wcwidth==0.1.7            # via pytest
+websockets==7.0
+yarl==1.1.1
+zipp==0.6.0               # via importlib-metadata