Custom License for Ikhyun utils

Copyright (c) 2024 Ikhyun Cho

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to use
the Software for personal, non-commercial purposes, subject to the following
conditions:

1. The Software may be used, copied, modified, and distributed for personal,
   non-commercial purposes only, under the terms of the GNU General Public
   License as published by the Free Software Foundation, either version 3 of
   the License, or (at your option) any later version.

2. Commercial use of the Software is strictly prohibited without prior written
   permission from the copyright holder. For commercial use, please contact
   ikhyun@tmax.co.kr to obtain a commercial license.

3. Any distribution of this software must include the above copyright notice,
   this list of conditions, and the following disclaimer.

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.
