I had accidentally broken the raceXML construction - fixed it.

Fixed a few issues where boat didn't have nextMark/previousMark times under certain circumstances.
LatestMessages wasn't actually notifying properly - fixed.
The various XML readers now treat a string constructor as containing file contents, not file name - this was how it was mostly already used.
Fixed some issues in RaceXMLReader, including where element.getChildNodes() was used instead of element.getElementsByName(...).
Boat: changes speed to a doubleProperty. Changed leg to a Property<Leg>.
Race.lastFps is now an IntegerProperty.
Added breaks to the case statements in VisualiserInput. Whoops.
ResizableRaceCanvas now handles drawing the race boundary. Tidied up code a bit.
Removed ResizableRaceMap.

Started refactoring Sparkline. Currently doesn't work.

racevisionGame/src/main/java/mock/app/Event.java

@@ -72,6 +72,7 @@ public class Event {
 
         } catch (XMLReaderException | InvalidBoatDataException | InvalidRaceDataException | InvalidRegattaDataException e) {
             e.printStackTrace();
+            //TODO if this occurs, we should print and error and abort.
         }
     }
 
@@ -89,7 +90,7 @@ public class Event {
 
     /**
      * Sets the xml description of the race to show the race was created now, and starts in 4 minutes
-     * @param raceXML
+     * @param raceXML The race.xml contents.
      * @return String containing edited xml
      */
     private String getRaceXMLAtCurrentTime(String raceXML) {
@@ -102,9 +103,9 @@ public class Event {
 
         DateTimeFormatter dateFormat = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ssZ");
         ZonedDateTime creationTime = ZonedDateTime.now();
-        raceXML.replace("CREATION_TIME", dateFormat.format(creationTime));
+        raceXML = raceXML.replace("CREATION_TIME", dateFormat.format(creationTime));
 
-        raceXML.replace("START_TIME", dateFormat.format(creationTime.plusSeconds(secondsToAdd)));
+        raceXML = raceXML.replace("START_TIME", dateFormat.format(creationTime.plusSeconds(secondsToAdd)));
 
         return raceXML;