Remove pytest < 3.3.2 from the test suite

.travis.yml

@@ -6,9 +6,6 @@ matrix:
   include:
     - python: "2.7"
       env: TOXENV=py27-pytestlatest-linters
-    - env: TOXENV=py27-pytest30
-    - env: TOXENV=py27-pytest31
-    - env: TOXENV=py27-pytest32
     - env: TOXENV=py27-pytest33
     - env: TOXENV=py27-pytest34
     - env: TOXENV=py27-pytest35

CHANGES.rst

@@ -4,7 +4,7 @@ Changelog
 Unreleased
 ----------
 
-- Drop support for pytest < 3.3
+- Drop support for pytest < 3.3.2
 
 3.0.2
 ------

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 distshare={homedir}/.tox/distshare
-envlist=py27-pytestlatest-linters,py27-pytest{30,31,32,33,34,35,36,37,38,39,310,40,41,42,latest},py{34,35,36,37}-pytestlatest,py27-pytestlatest-xdist
+envlist=py27-pytestlatest-linters,py27-pytest{33,34,35,36,37,38,39,310,40,41,42,latest},py{34,35,36,37}-pytestlatest,py27-pytestlatest-xdist
 skip_missing_interpreters = true
 
 [testenv]
@@ -16,11 +16,7 @@ deps =
     pytest36: pytest~=3.6.0
     pytest35: pytest~=3.5.0
     pytest34: pytest~=3.4.0
-    pytest33: pytest~=3.3.0
-    pytest32: pytest~=3.2.0
-    pytest31: pytest~=3.1.0
-    pytest30: pytest~=3.0.0
-    pytest30,pytest29: pytest-warnings
+    pytest33: pytest~=3.3.2
     -r{toxinidir}/requirements-testing.txt
 commands = py.test tests --junitxml={envlogdir}/junit-{envname}.xml