1diff --git b/LICENSE a/LICENSE 2new file mode 100644 3index 0000000..21f30fa 4--- /dev/null 5+++ a/LICENSE 6@@ -0,0 +1,19 @@ 7+Copyright (c) 2019 Stepan Koltsov 8+ 9+Permission is hereby granted, free of charge, to any person obtaining a copy 10+of this software and associated documentation files (the "Software"), to deal 11+in the Software without restriction, including without limitation the rights 12+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 13+copies of the Software, and to permit persons to whom the Software is 14+furnished to do so, subject to the following conditions: 15+ 16+The above copyright notice and this permission notice shall be included in all 17+copies or substantial portions of the Software. 18+ 19+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 22+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 23+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 24+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 25+OR OTHER DEALINGS IN THE SOFTWARE. 26