Split Travis config into jobs

.travis.yml

@@ -2,19 +2,44 @@ version: ~> 1.0
 os: linux
 dist: xenial   # required for Python >= 3.7
 language: python
-python:
- - "3.6"
- - "3.7"
- - "3.8"
- - "nightly"
-install:
- - pip install mypy
- - pip install coverage
- - pip install pylint
-script:
- - mypy primes.py binary_search.py --strict
- - python test.py
- - coverage run --include=primes.py,test.py,binary_search.py test.py && coverage report -m --fail-under=100 --rcfile=coveragerc
- - python speed_test.py --all
- - python speed_test.py --fermat 6
- - pylint primes.py binary_search.py
+python: "nightly"
+jobs:
+  include:
+      - name: "Type check and lint"
+        install: 
+          - pip install mypy
+          - pip install pylint
+        script: 
+          - mypy primes.py binary_search.py --strict
+          - pylint primes.py binary_search.py
+      - &unit-tests
+        script: python test.py
+        name: "Unit Tests 3.6"
+        python: "3.6"
+      - <<: *unit-tests
+        name: "Unit Tests 3.7"
+        python: "3.7"
+      - <<: *unit-tests
+        name: "Unit Tests 3.8"
+        python: "3.8"
+      - <<: *unit-tests
+        name: "Unit Tests Nightly"
+        python: "nightly"
+      - name: "Coverage"
+        install: pip install coverage
+        script: coverage run --include=primes.py,test.py,binary_search.py test.py && coverage report -m --fail-under=100 --rcfile=coveragerc
+      - &speed-test
+        script: 
+          - python speed_test.py --all
+          - python speed_test.py --fermat 6
+        name: "Speed Test 3.6"
+        python: "3.6"
+      - <<: *speed-test
+        name: "Speed Test 3.7"
+        python: "3.7"
+      - <<: *speed-test
+        name: "Speed Test 3.8"
+        python: "3.8"
+      - <<: *speed-test
+        name: "Speed Test Nightly"
+        python: "nightly"