Calendar Component in Jetpack Compose

I have been working on Jetpack Compose library, which brings a component for rendering a calendar: https://github.com/boguszpawlowski/ComposeCalendar
It supports custom day content, month and week headers etc. Also, it provides a mechanism for different types of selection (single day, multiple days, period) out-of-the-box. It is still in early development (v0.1.0), so the API and documentation aren’t perfect and are due to change, but I will try to provide a blog post on it in around next week. I would be grateful for every suggestion, criticism and feedback. Cheers!