CI: Drop 2.7, 3.4 tests from Travis

Author: effigies

.travis.yml

@@ -22,20 +22,16 @@ env:
         - EXTRA_PIP_FLAGS="--find-links=$EXTRA_WHEELS"
         - PRE_PIP_FLAGS="--pre $EXTRA_PIP_FLAGS --find-links $PRE_WHEELS"
 python:
-    - 3.5
     - 3.6
     - 3.7
 matrix:
   include:
-    - python: 3.4
-      dist: trusty
-      sudo: false
     # Absolute minimum dependencies
-    - python: 2.7
+    - python: 3.5
       env:
         - DEPENDS="numpy==1.8 setuptools==30.3.0"
     # Absolute minimum dependencies
-    - python: 2.7
+    - python: 3.5
       env:
         - DEPENDS="numpy==1.8"
         - CHECK_TYPE="import"
@@ -44,54 +40,41 @@ matrix:
     # nibabel/info.py
     # doc/source/installation.rst
     # requirements.txt
-    - python: 2.7
+    - python: 3.5
       env:
         - DEPENDS="numpy==1.8 matplotlib==1.3.1"
     # Minimum pydicom dependency
-    - python: 2.7
+    - python: 3.5
       env:
         - DEPENDS="numpy==1.8 pydicom==0.9.9 pillow==2.6"
     # pydicom master branch
     - python: 3.5
       env:
         - DEPENDS="numpy git+https://github.com/pydicom/pydicom.git@master"
-    # test 2.7 against pre-release builds of everything
-    - python: 2.7
-      env:
-        - EXTRA_PIP_FLAGS="$PRE_PIP_FLAGS"
     # test 3.5 against pre-release builds of everything
     - python: 3.5
       env:
         - EXTRA_PIP_FLAGS="$PRE_PIP_FLAGS"
-    - python: 2.7
+    - python: 3.5
       env:
         - INSTALL_TYPE=sdist
-    - python: 2.7
+    - python: 3.5
       env:
         - INSTALL_TYPE=wheel
-    - python: 2.7
+    - python: 3.5
       env:
         - INSTALL_TYPE=requirements
-    - python: 2.7
+    - python: 3.5
       env:
         - INSTALL_TYPE=archive
-    - python: 2.7
-      env:
-        - CHECK_TYPE="style"
     - python: 3.5
       env:
         - CHECK_TYPE="style"
     # Documentation doctests
-    - python: 2.7
-      env:
-        - CHECK_TYPE="doc_doctests"
     - python: 3.5
       env:
         - CHECK_TYPE="doc_doctests"
     # Run tests with indexed_gzip present
-    - python: 2.7
-      env:
-        - OPTIONAL_DEPENDS="indexed_gzip"
     - python: 3.5
       env:
         - OPTIONAL_DEPENDS="indexed_gzip"