rename CI

Author: ChrisRackauckas

.github/workflows/CI.yml

@@ -1,41 +1,19 @@
 name: CI
 on:
-  push:
+  pull_request:
     branches:
       - master
-    paths-ignore:
-      - 'LICENSE.md'
-      - 'README.md'
-      - '.github/workflows/CompatHelper.yml'
-      - '.github/workflows/TagBot.yml'
-    tags: '*'
-  pull_request:
+  push:
     branches:
       - master
-    paths-ignore:
-      - 'LICENSE.md'
-      - 'README.md'
-      - '.github/workflows/CompatHelper.yml'
-      - '.github/workflows/TagBot.yml'
 jobs:
   test:
-    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - '1'
-        os:
-          - ubuntu-latest
-        arch:
-          - x64
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1
         with:
-          version: ${{ matrix.version }}
-          arch: ${{ matrix.arch }}
+          version: 1
       - uses: actions/cache@v1
         env:
           cache-name: cache-artifacts