+> # Boolean
+> "TrUe" true EXPECT: true
+> "FALSE" false EXPECT: false
+> " yes" true EXPECT: true
+> " no" false EXPECT: false
+> "yes " true EXPECT: true
+> "-1" true EXPECT: true
+> "0" false EXPECT: false
+> "1" true EXPECT: true
+> " 0 " false EXPECT: false
+> " 1 " true EXPECT: true
+> "1111111111111111111" true EXPECT: true
+> "9" true EXPECT: true
+> " " false EXPECT: false
+> Failed: unrecognised boolean value "text"
+> Failed: unrecognised boolean value "text"
+> Failed: unrecognised boolean value "-text"
+> Failed: unrecognised boolean value "text"
+> Failed: unrecognised boolean value "text"
+> "00" false EXPECT: false
+> "!true" false EXPECT: false
+> "!false" true EXPECT: true
+>
+> "TrUe" true EXPECT: true
+> "FALSE" false EXPECT: false
+> " yes" true EXPECT: true
+> " no" false EXPECT: false
+> "yes " true EXPECT: true
+> "-1" true EXPECT: true
+> "0" false EXPECT: false
+> "1" true EXPECT: true
+> " 0 " false EXPECT: false
+> " 1 " true EXPECT: true
+> "1111111111111111111" true EXPECT: true
+> "9" true EXPECT: true
+> " " false EXPECT: false
+> "text" true EXPECT: true
+> " text" true EXPECT: true
+> "text " true EXPECT: true
+> " text " true EXPECT: true
+> "00" true EXPECT: true
+> "!true" false EXPECT: false
+> "!false" true EXPECT: true
+>