Merge branch 'CI' into 'dev'

Added gitlab CI to repository

See merge request Steins7/iv!15

.gitlab-ci.yml

@@ -0,0 +1,50 @@
+stages:
+  - build
+  - test
+  - doc
+
+stable:cargo:build:
+  stage: build
+  script:
+    - rustup toolchain install stable
+    - rustup default stable
+    - rustc --version && cargo --version
+    - cargo build
+
+stable:cargo:test:
+  stage: test
+  dependencies: 
+    - stable:cargo:build
+  needs:
+    - stable:cargo:build
+  script:
+    - rustup default stable
+    - rustc --version && cargo --version
+    - cargo test --jobs 1
+
+nightly:cargo:build:
+  stage: build
+  script:  
+    - rustup toolchain install nightly
+    - rustup default nightly
+    - rustc --version && cargo --version
+    - cargo build
+  allow_failure: true
+
+nightly:cargo:test:
+  stage: test
+  dependencies: 
+    - nightly:cargo:build
+  needs: 
+    - nightly:cargo:build
+  script:
+    - rustup default nightly
+    - rustc --version && cargo --version
+    - cargo test --jobs 1
+  allow_failure: true
+
+stable:cargo:doc:
+  stage: doc
+  needs: []
+  script:
+    - cargo doc