Bump pycrdt >=0.9.0,<0.10.0 (#31)

* Bump pycrdt >=0.9.0,<0.10.0

* Update links

README.md

@@ -1,10 +1,10 @@
-[![Build Status](https://github.com/davidbrochart/ypywidgets/workflows/test/badge.svg)](https://github.com/davidbrochart/ypywidgets/actions)
+[![Build Status](https://github.com/QuantStack/ypywidgets/workflows/test/badge.svg)](https://github.com/QuantStack/ypywidgets/actions)
 
 # ypywidgets: Y-based Jupyter widgets for Python
 
 `ypywidgets` is a communication backend between a Jupyter kernel and clients. It allows to synchronize data structures that can be modified concurrently, and automatically resolves conflicts. To do so, it uses:
 - the Jupyter kernel [Comm](https://jupyter-client.readthedocs.io/en/stable/messaging.html#custom-messages) protocol as the transport layer, and the [comm](https://github.com/ipython/comm) implementation of it.
-- the [pycrdt](https://github.com/davidbrochart/pycrdt) CRDT implementation.
-- the [reacttrs](https://github.com/davidbrochart/reacttrs) library that implements the observer pattern and validation.
+- the [pycrdt](https://github.com/jupyter-server/pycrdt) CRDT implementation.
+- the [reacttrs](https://github.com/QuantStack/reacttrs) library that implements the observer pattern and validation.
 
-It is a replacement for (a part of) [ipywidgets](https://ipywidgets.readthedocs.io). When used with [yjs-widgets](https://github.com/davidbrochart/yjs-widgets), it supports JupyterLab clients that implement widgets. The difference with `ipywidgets` is that these widgets are collaborative: they can be manipulated concurrently from the kernel or from any client. The CRDT algorithm ensures that a widget state will eventually be consistent across all clients.
+It is a replacement for (a part of) [ipywidgets](https://ipywidgets.readthedocs.io). When used with [yjs-widgets](https://github.com/QuantStack/yjs-widgets), it supports JupyterLab clients that implement widgets. The difference with `ipywidgets` is that these widgets are collaborative: they can be manipulated concurrently from the kernel or from any client. The CRDT algorithm ensures that a widget state will eventually be consistent across all clients.

pyproject.toml

@@ -19,7 +19,7 @@ keywords = [
 ]
 dependencies = [
     "comm >=0.1.4,<1",
-    "pycrdt >=0.8.30,<0.9.0",
+    "pycrdt >=0.9.0,<0.10.0",
     "reacttrs >=0.2.1,<0.3.0",
 ]