Add missing license headers

Author: jtpio

css/widget.css

@@ -1,3 +1,8 @@
+/*-----------------------------------------------------------------------------
+| Copyright (c) ipylab contributors.
+| Distributed under the terms of the Modified BSD License.
+|----------------------------------------------------------------------------*/
+
 /* Default Split Handle Color*/
 .jp-JupyterLuminoSplitPanelWidget .p-SplitPanel-handle {
   background-color: var(--jp-border-color2);

ipylab/sessions.py

@@ -1,5 +1,8 @@
-"""Expose current and all sessions to python kernel
-"""
+#!/usr/bin/env python
+# coding: utf-8
+
+# Copyright (c) ipylab contributors.
+# Distributed under the terms of the Modified BSD License.
 
 import asyncio
 
@@ -35,7 +38,7 @@ def _on_frontend_msg(self, _, content, buffers):
 
     async def refresh_running(self):
         """Force a call to refresh running sessions
-        
+
         Resolved when `SessionManager.runnigSession` resolves
         """
         self.send({"func": "refreshRunning"})

src/widgets/sessions.ts

@@ -1,3 +1,6 @@
+// Copyright (c) ipylab contributors
+// Distributed under the terms of the Modified BSD License.
+
 // SessionManager exposes `JupyterLab.serviceManager.sessions` to user python kernel
 
 import { SessionManager } from '@jupyterlab/services';