Update Project.toml

I'm making this a major version release... In theory it should be non breaking, but we dont have good test coverage, and I changed almost the whole package. AbstractPlotting works fine with it, so that's good, but all the features I didn't add and dont have tests might all be broken for what I know...

Author: SimonDanisch

Project.toml

@@ -1,7 +1,7 @@
 name = "GeometryTypes"
 uuid = "4d00f742-c7ba-57c2-abde-4428a4b178cb"
 author = "Simon Danisch"
-version = "0.7.10"
+version = "0.8.0"
 
 [deps]
 ColorTypes = "3da002f7-5984-5a60-b8a6-cbb66c0b333f"