clide terminal — derivative work based on xterm.dart v4.0.0.

The terminal emulator code in this directory is derived from xterm.dart
(https://github.com/TerminalStudio/xterm.dart) and has been modified.
Changes include: Scrollable removal, quiver dependency replaced with
hand-rolled LRU, zmodem/debugger/suggestion modules stripped, scroll
event forwarding rewritten, imports restructured.

The original xterm.dart code is copyright (c) 2020 xuty and licensed
under the MIT License, reproduced below. This derivative work is part
of clide and is distributed under clide's MIT license.

------------------------------------------------------------------------

The MIT License (MIT)

Copyright (c) 2020 xuty

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.