hererocks 0.20.0

New features and improvements:

• Added support for LuaRocks 3.0.0 - 3.0.2. latest and ^ aliases still point to 2.4.4.
• --show can now be used when installing programs; all programs present in the given location are listed after installation is complete.

Fixes:

• package.path for Lua 5.3+ built with hererocks now includes ./?/init.lua, just as with standard Lua.