chore: Version bump to v0.5.0

Author: s-minoo

Cargo.toml

@@ -13,7 +13,7 @@ members = ["operator", "vocab", "plan", "translator"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [workspace.package]
-version = "0.2.0"
+version = "0.5.0"
 authors = ["Sitt Min Oo"]
 edition = "2021"