Update circle script (#84)

Author: tclindner

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: circleci/node:8
+      - image: circleci/node:12
     steps:
       - checkout
       - run: npm install
@@ -11,20 +11,6 @@ jobs:
           root: ~/
           paths:
             - project
-  test-node8:
-    docker:
-      - image: circleci/node:8
-    steps:
-      - attach_workspace:
-          at: ~/
-      - run: npm test
-  test-node9:
-    docker:
-      - image: circleci/node:9
-    steps:
-      - attach_workspace:
-          at: ~/
-      - run: npm test
   test-node10:
     docker:
       - image: circleci/node:10
@@ -55,7 +41,7 @@ jobs:
       - run: npm test
   publish-beta:
     docker:
-      - image: circleci/node:10
+      - image: circleci/node:12
     steps:
       - attach_workspace:
           at: ~/
@@ -67,7 +53,7 @@ jobs:
           command: npm publish --tag beta
   publish-stable:
     docker:
-      - image: circleci/node:10
+      - image: circleci/node:12
     steps:
       - attach_workspace:
           at: ~/
@@ -86,18 +72,6 @@ workflows:
           filters:
             tags:
               only: /.*/
-      - test-node8:
-          requires:
-            - build
-          filters:
-            tags:
-              only: /.*/
-      - test-node9:
-          requires:
-            - build
-          filters:
-            tags:
-              only: /.*/
       - test-node10:
           requires:
             - build
@@ -124,8 +98,6 @@ workflows:
               only: /.*/
       - publish-beta:
           requires:
-            - test-node8
-            - test-node9
             - test-node10
             - test-node11
             - test-node12
@@ -138,8 +110,6 @@ workflows:
       - hold:
           type: approval
           requires:
-            - test-node8
-            - test-node9
             - test-node10
             - test-node11
             - test-node12