Merge branch 'pipeline' into 'master'

GitLab Pipeline

See merge request !1

.gitlab-ci.yml

+image: fedora:latest
+
+stages:
+    - build
+    - test
+
+compile:
+    stage: build
+    before_script:
+        - dnf install -y gcc gcc-c++ cmake make openssl-devel
+    script:
+        - mkdir build
+        - cd build
+        - cmake ..
+        - make pdfsigil pdfsigil_static pdf-sigil selftest
+    artifacts:
+        paths:
+            - build/libpdfsigil_static.a
+            - build/pdf-sigil
+            - build/libpdfsigil.so
+            - build/selftest
+        expire_in: 1 day
+
+test:
+    stage: test
+    before_script:
+        - export LD_LIBRARY_PATH="./build:$LD_LIBRARY_PATH"
+    script:
+        - ./build/selftest --verbose
+