[ANN] Selene 0.3.1

[Jeremy Ong <jeremycong@...>]

https://github.com/jeremyong/Selene

Selene is a (now) headers-only library to embed Lua in a modern C++11
application.

This release does the following:

- Restructures code so that it is now headers-only (original created a library)
- Leverages ref-qualifiers to improve Selector performance
- Deprecates Call syntax in favor of more intuitive usage
- Other minor quality of life improvements

Don't hesitate to contact me if you have questions, comments,
requests, would like to contribute, or any combination of the above.

- Jeremy