Add CI

.gitignore

 *.abc
 *.o
 *.tcl
+*.prj
+*.exe
 a.out

.gitlab-ci.yml

+test:
+  image: "camilstaps/clean:base"
+  before_script:
+    - apt-get update -qq
+    - apt-get install -y -qq --no-install-recommends ca-certificates curl tar build-essential
+    - curl https://ftp.cs.ru.nl/Clean/builds/linux-x64/clean-base-linux-x64-latest.tgz | tar xzv --strip-components=1 -C /opt/clean
+    - curl https://ftp.cs.ru.nl/Clean/builds/linux-x64/clean-lib-platform-linux-x64-latest.tgz | tar xzv --strip-components=1 -C /opt/clean
+  script:
+    - cd Tests
+    - cp test0.prj.default test0.prj; cpm project test0.prj build
+    - clm -IL Platform -I ../Libraries with_options