hererocks 0.3.0

New features/improvements:

• LuaRocks versions 2.0.8 - 2.0.12 are now supported.
• --compat=none now turns off Lua 5.0 compatibility options when installing Lua 5.1
• Default git repos are cached.
• New --cflags option for adding custom compiler flags when compiling Lua and LuaJIT.

Fixes:

• LuaJIT jit.* modules are now properly installed.