Release Version 0.5.0

Huge shoutout to BaronyCraft for contributing these features!
- Prevent users from escaping the /images folder
- allow reloading images from console
- cancel placement by right clicking air (requires item in hand)
- allow downloading images from the web to the /images folder
-- /imagemap <fileName> download <URL>
-- requires imagemap.download permission
- /imagemap <fileName> info command to get dimensions of image
- display space requirements before placement
- added scale parameter
-- /imagemap <fileName> scale <tilesX> <tilesY>
-- scales to fit in given constraints, but keeps aspect ratio

pom.xml

@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>de.craftlancer.imagemaps</groupId>
   <artifactId>ImageMaps</artifactId>
-  <version>0.5.0-SNAPSHOT</version>
+  <version>0.5.0</version>
   <name>ImageMaps</name>
   <description>Draw Images on maps!</description>
   <properties>