Add CI build cache

.github/workflows/main.yml

@@ -0,0 +1,41 @@
+name: Main
+
+on:
+  pull_request: {}
+  push:
+    branches:
+    - master
+    - rc/*
+
+jobs:
+  Tests:
+    name: ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup latest stack
+        uses: actions/setup-haskell@v1
+        with:
+          enable-stack: true
+          stack-version: 'latest'
+
+      - name: Cache .stack-root
+        uses: actions/cache@v1
+        env:
+          cache-name: stack-root
+        with:
+          path: .stack-root
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('stack.yaml') }}
+
+      - name: Test
+        shell: bash
+        run: |
+          set -ex
+          export STACK_ROOT=$(pwd)/.stack-root
+          stack test --haddock --no-haddock-deps

.github/workflows/testing.yml

@@ -1,16 +0,0 @@
-on: [push]
-name: Testing
-jobs:
-  unit-tests:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest]
-    name: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-haskell@v1
-        with:
-          enable-stack: true
-          stack-version: 'latest'
-      - run: stack test

README.md

@@ -4,7 +4,7 @@ Web3 API for Haskell
 This library implements Haskell API client for popular Web3 platforms.
 
 [![Documentation Status](https://readthedocs.org/projects/hs-web3/badge/?version=latest)](https://hs-web3.readthedocs.io/en/latest/?badge=latest)
-[![Testing](https://github.com/airalab/hs-web3/workflows/Testing/badge.svg)](https://github.com/airalab/hs-web3/actions)
+[![CI](https://github.com/airalab/hs-web3/workflows/Main/badge.svg)](https://github.com/airalab/hs-web3/actions)
 [![Hackage Matrix](https://matrix.hackage.haskell.org/api/v2/packages/web3/badge)](https://matrix.hackage.haskell.org/package/web3)
 [![Hackage](https://img.shields.io/hackage/v/web3.svg)](http://hackage.haskell.org/package/web3)
 [![LTS-14](http://stackage.org/package/web3/badge/lts-14)](http://stackage.org/lts-14/package/web3)