JBWAPI 1.5.1 support

[Ravaelles]

Hey man! I wanted to use this great package to get a wall-in functionality, but it seems it's not working with JBWAPI 1.5.1. I tried fixing the parts that cause exceptions, but I failed. Stations seem to work fine, but I never managed to return any wall-in, all I managed to do is to hide the exceptions.

Would it be really hard / time-consuming to provide JBWAPI 1.5.1 support? I think it would be really helpful not just for me, but for the community too.

The exception I'm getting is:

Exception in thread "main" java.lang.NullPointerException
	at jbweb.Path.createUnitPath(Path.java:129)
	at jbweb.Wall.initialize(Wall.java:649)
	at jbweb.Wall.<init>(Wall.java:40)
	at jbweb.Walls.createWall(Walls.java:118)
	at jbweb.Walls.createTWall(Walls.java:209)

[MrTate]

Hey, there were still some bugs with the current release that were never ironed out so those would need to be fixed first.

Feel free to contribute to the package but I haven't been able to work on it for like 6 months and I don't know when I will be able to again soon.

[dgant]

@Ravaelles Specifically JavaBWAPI/JBWAPI#72