v0.0.5

• BREAKING: Make some new constructor functions into From::from trait implementations with more generic arguments using Into trait.
• BREAKING: Avoid heap allocation on a single-key key binding by changing KeySeq struct to an enum.
• BREAKING: Rename KeySeq::matches to KeySeq::match_to.
• BREAKING: Hide KeyInput's fields and add getter methods KeyInput::key, KeyInput::mods.
• Add support for Shift modifier again. Shift modifier key is only available with named keys like Shift+Up. For example, when you want to define key binding for Shift + A, you need to use A instead of Shift+a. This restriction is for avoiding some confusing edge cases and may be relaxed in the future.
• Make fields of Keybind struct public.
• Fix error handling on parsing invalid empty key bindings.
• Fix non-ASCII spaces like U+3000 are not available for key binding.
• Define the key binding syntax in the separate document.