[MRG] Offload work to plugins

.coveragerc

@@ -2,7 +2,7 @@
 omit =
     pylibjpeg/tests/*
     pylibjpeg/scripts/*
-    pylibjpeg/data/*
-    pylibjpeg/src/*
+    pylibjpeg/tools/*
+    pylibjpeg-data/*
+    pylibjpeg-libjpeg/*
     pydicom/*
-    pydicom-master/*

.travis.yml

@@ -4,76 +4,53 @@ branches:
 
 language: python
 
-# Build against pydicom master and current release
 matrix:
     include:
-        # OSX first because it takes a long time to complete before_install
-        - name: "Python 3.6, OSX + pydicom"
-          os: osx
-          language: generic
-          env:
-            - TEST_SUITE=osx
-            - TRAVIS_PYTHON_VERSION=3.6.8
-        # Windows
-        - name: "Python 3.6, Windows + pydicom"
-          os: windows
-          language: shell
-          env:
-            - TEST_SUITE=windows
-            - TRAVIS_PYTHON_VERSION=3.6.8
-        # Conda next, also takes a while
-        - name: "Python 3.6, Ubuntu + conda + pydicom"
-          os: linux
-          dist: bionic
-          env:
-            - TEST_SUITE=conda
-            - TRAVIS_PYTHON_VERSION=3.6
-        # Ubuntu with pydicom master next to find any issues quickly
-        - name: "Python 3.6, Ubuntu + pydicom master"
-          os: linux
-          dist: bionic
-          python: "3.6"
-          env: TEST_SUITE=pydicom_master
-        - name: "Python 3.7, Ubuntu + pydicom master"
-          os: linux
-          dist: bionic
-          python: "3.7"
-          env: TEST_SUITE=pydicom_master
-        - name: "Python 3.8, Ubuntu + pydicom master"
-          os: linux
-          dist: bionic
-          python: "3.8"
-          env: TEST_SUITE=pydicom_master
+        # No plugins + pydicom
         - name: "Python 3.6, Ubuntu"
           os: linux
           dist: bionic
           python: "3.6"
-          env: TEST_SUITE=solo
+          env:
+            - INSTALL_PYDICOM=true
+            - INSTALL_LIBJPEG=false
         - name: "Python 3.7, Ubuntu"
           os: linux
           dist: bionic
           python: "3.7"
-          env: TEST_SUITE=solo
+          env:
+            - INSTALL_PYDICOM=true
+            - INSTALL_LIBJPEG=false
         - name: "Python 3.8, Ubuntu"
           os: linux
           dist: bionic
           python: "3.8"
-          env: TEST_SUITE=solo
-        - name: "Python 3.6, Ubuntu + pydicom"
+          env:
+            - INSTALL_PYDICOM=true
+            - INSTALL_LIBJPEG=false
+        # libjpeg + pydicom
+        - name: "Python 3.6, Ubuntu + libjpeg"
           os: linux
           dist: bionic
           python: "3.6"
-          env: TEST_SUITE=pydicom_release
-        - name: "Python 3.7, Ubuntu + pydicom"
+          env:
+            - INSTALL_PYDICOM=true
+            - INSTALL_LIBJPEG=true
+        - name: "Python 3.7, Ubuntu + libjpeg"
           os: linux
           dist: bionic
           python: "3.7"
-          env: TEST_SUITE=pydicom_release
-        - name: "Python 3.8, Ubuntu + pydicom"
+          env:
+            - INSTALL_PYDICOM=true
+            - INSTALL_LIBJPEG=true
+        - name: "Python 3.8, Ubuntu + libjpeg"
           os: linux
           dist: bionic
           python: "3.8"
-          env: TEST_SUITE=pydicom_release
+          env:
+            - INSTALL_PYDICOM=true
+            - INSTALL_LIBJPEG=true
+
 
 # Install dependencies and package
 install: