Add CITATION.cff

Bump version for release of state as used during GROS research.

CITATION.cff

@@ -0,0 +1,18 @@
+cff-version: 1.2.0
+title: >-
+   Tools for securely uploading files via HTTPS and GPG
+message: Please cite this software as follows.
+type: software
+authors:
+  - given-names: Leon
+    family-names: Helwerda
+    email: l.s.helwerda@liacs.leidenuniv.nl
+    affiliation: Leiden University
+    orcid: 'https://orcid.org/0000-0002-4299-466X'
+repository-code: 'https://github.com/grip-on-software/export-exchange'
+url: 'https://gros.liacs.nl/'
+keywords:
+  - gpg-encryption
+  - secure-upload
+license: Apache-2.0
+version: 0.0.3

sonar-project.properties

@@ -2,7 +2,7 @@
 sonar.projectKey=export-exchange
 # this is the name and version displayed in the SonarQube UI. Was mandatory prior to SonarQube 6.1.
 sonar.projectName=Export exchange
-sonar.projectVersion=0.0.1
+sonar.projectVersion=0.0.3
 
 # Path is relative to the sonar-project.properties file. Replace "\" by "/" on Windows.
 # This property is optional if sonar.modules is set.