Bump version to 0.6.0

Breaking changes in this release:
- simulate() returns (output, info) tuple instead of 3-tuple or single value
- gen_images()/gen_image() return (images, ImageInfo) tuple
- StaticSMLMParams renamed to StaticSMLMConfig
- DiffusionSMLMParams renamed to DiffusionSMLMConfig

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: kalidke

Project.toml

@@ -1,6 +1,6 @@
 name = "SMLMSim"
 uuid = "5a0a87e4-02d4-41f5-bf26-b8c94c784a04"
-version = "0.5.0"
+version = "0.6.0"
 authors = ["klidke@unm.edu"]
 
 [deps]