Bugfix release:

* luafungh-21: Fix support of Lua 5.3
* luafungh-15: Display a warning if a function already exists in _G
* Fix compilation of documentation with the stock Sphinx
* Add RPM and Debian packages
* Minor changes

Bugfix release:

* luafungh-21: Fix support of Lua 5.3
* luafungh-15: Display a warning if a function already exists in _G
* Fix compilation of documentation with the stock Sphinx
* Add RPM and Debian packages
* Minor changes

Tag 0.1.2

Tag version 0.1.1