Refactor + tests (#6)

- Minor codebase clean-up
- Slight reorganisation of examples + tests so that we don't break stuff by accident
- CI tests

reactics-bdd/in/old_syntax/simple_I1.drs

@@ -0,0 +1,19 @@
+#
+# Coffee machine RS
+#
+
+reactions {
+    { { e1; e4; }, { e2; } -> { e1; e2; } };
+    { { e2; }, { e3; } -> { e1; e3; e4; } };
+    { { e1; e3; }, { e2; } -> { e1; e2; } };
+    { { e3; }, { e2; } -> { e1; } };
+}
+
+action-atoms { e4; }
+initial-state { e1; e4; } 
+ctl-property { EF ( coffee_ready ) }
+#ctl-property { AG( coffee_ready IMPLIES ~water_ready ) }
+#ctl-property { AG( failure IMPLIES AX ~busy ) }
+#ctl-property { EG ( EF coffee_ready ) }
+
+