Revert optimizations on spigot

Revert the optimizations which check if the chunk is already generated because
the function doesn't report the right value.
https://hub.spigotmc.org/jira/browse/SPIGOT-5541?attachmentOrder=desc

src/main/kotlin/net/trivernis/chunkmaster/lib/generation/GenerationTaskPaper.kt

@@ -59,7 +59,7 @@ class GenerationTaskPaper(
                     }
                 }
                 lastChunkCoords = chunk
-                count = shape.count // set the count to the more accurate spiral count
+                count = shape.count
             }
         }
         checkChunksLoaded()

src/main/kotlin/net/trivernis/chunkmaster/lib/generation/GenerationTaskSpigot.kt

@@ -34,15 +34,6 @@ class GenerationTaskSpigot(
                 if (borderReachedCheck()) return
 
                 var chunk = nextChunkCoordinates
-                for (i in 0 until chunkSkips) {
-                    if (world.isChunkGenerated(chunk.x, chunk.z)) {
-                        chunk = nextChunkCoordinates
-                    } else {
-                        break
-                    }
-                }
-
-                if (!world.isChunkGenerated(chunk.x, chunk.z)) {
                 for (i in 0 until chunksPerStep) {
                     if (borderReached()) break
                     val chunkInstance = world.getChunkAt(chunk.x, chunk.z)
@@ -53,7 +44,7 @@ class GenerationTaskSpigot(
                 val chunkInstance = world.getChunkAt(chunk.x, chunk.z)
                 chunkInstance.load(true)
                 loadedChunks.add(chunkInstance)
-                }
+
                 lastChunkCoords = chunk
                 count = shape.count
             }

src/main/kotlin/net/trivernis/chunkmaster/lib/shapes/Circle.kt

@@ -35,6 +35,9 @@ class Circle(center: Pair<Int, Int>, start: Pair<Int, Int>, radius: Int): Shape(
     }
 
     override fun next(): Pair<Int, Int> {
+        if (endReached()) {
+            return currentPos
+        }
         if (count == 0 && currentPos != center) {
             val tmpCircle = Circle(center, center, radius)
             while (tmpCircle.next() != currentPos);