Simple library for localization used in rust projects.

Example:

```rust use localizer::*; const langs_file : &str = " [langs.ru] \"ex1\" = \"ПРН\"

[langs.en] \"ex1\" = \"IKA\""; localizer::setlocstring(langsfile); assert!(localizer::getbykey(&"ex1") == "IKA"); localizer::changelocalizer(&|x|{x.setcurrentlang(Some("ru".tostring()));}); assert!(localizer::getby_key(&"ex1") == "ПРН"); ```