Fix version to v1.2 (#303)

Author: GlassOfWhiskey

Process.yml

@@ -26,27 +26,8 @@ $graph:
 
 - type: enum
   name: CWLVersion
-  doc: "Version symbols for published CWL document versions."
+  doc: "Current version symbol for CWL documents."
   symbols:
-    - cwl:draft-2
-    - cwl:draft-3.dev1
-    - cwl:draft-3.dev2
-    - cwl:draft-3.dev3
-    - cwl:draft-3.dev4
-    - cwl:draft-3.dev5
-    - cwl:draft-3
-    - cwl:draft-4.dev1
-    - cwl:draft-4.dev2
-    - cwl:draft-4.dev3
-    - cwl:v1.0.dev4
-    - cwl:v1.0
-    - cwl:v1.1.0-dev1   # a dash is required by the semver 2.0 rules
-    - cwl:v1.1
-    - cwl:v1.2.0-dev1
-    - cwl:v1.2.0-dev2
-    - cwl:v1.2.0-dev3
-    - cwl:v1.2.0-dev4
-    - cwl:v1.2.0-dev5
     - cwl:v1.2
 
 - name: Labeled