Merge branch 'dev-2.0.0' into GH-47

Author: zeptometer

.github/workflows/ci.yml

@@ -1,6 +1,6 @@
 name: CI
 
-on: push
+on: [push, pull_request]
 
 jobs:
   regression-test:
@@ -12,9 +12,10 @@ jobs:
       - name: Install Apt dependencies
         run: |
           apt-get update && apt install -y gnupg
+          curl -sL https://deb.nodesource.com/setup_10.x | bash -
           curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
           echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
-          apt-get update && apt-get install -y yarn graphicsmagick
+          apt-get update && apt-get install -y nodejs yarn graphicsmagick
       - name: Install Yarn dependencies
         run: |
           yarn install
@@ -24,7 +25,7 @@ jobs:
           eval $(opam env)
           opam update
           opam pin add --verbose --yes "."
-          satyrographos install
+          satyrographos install -l base
       - name: Run regression tests
         run: |
           export HOME=/root

README.md

@@ -1,5 +1,7 @@
 # satysfi-base
 
+[![build status](https://github.com/nyuichi/satysfi-base/workflows/CI/badge.svg)](https://github.com/nyuichi/satysfi-base/actions?query=workflow%3ACI)
+
 ## TL;DR
 
 ```ocaml