version bump and dependency update

Author: proycon

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "stam-python"
-version = "0.8.4"
+version = "0.9.0"
 edition = "2021"
 authors = ["Maarten van Gompel <[email protected]>"]
 description = "STAM is a library for dealing with standoff annotations on text, this is the python binding."
@@ -18,8 +18,8 @@ crate-type = ["cdylib"]
 
 [dependencies]
 pyo3 = { version = "0.20.3", features = ["chrono"] }
-stam = "0.14.2"
-stam-tools = "0.7.4"
+stam = "0.15.0"
+stam-tools = "0.8.0"
 
 [features]
 default = ["pyo3/extension-module"]