Update rglua-macros version

Fix comparison error

Criminally underrated library, zero stars yet checks everything glua-sys and gmod-rs don't.

2.0.0-beta

Full changelist will be in 2.0.0. Essentially a lot of breaking changes, added Userdata support for Vector and Angle, some missing lua c api functions, and a lot of documentation.

1.0.0

* Use $crate instead of rglua in macros
* Add variadic support to dyn_symbols (In turn re-adds luaL_error and pushfstring
* Add lua_getinfo
* Add lua_next
* Add lua_replace
* Add lua_lessthan
* Add lua_gc
* Add rest of the functions we were missing
* Add lua_objlen
Types are now T* instead of Type::*. Same with prior enums. Deprecated old ones

* Added LuaDebug
* Added LuaAlloc
* Added LuaHook
* Added LuaReader
* Removed redundant Interface trait, vtables already adds a function to get a ptr.

I'm not gonna work on this for a while this is getting tiring. Near the completion of the library (in terms of the lua part.)

Remove travis

README changes

Removed a lot of clutter, link to example so I don't have to update the version every tiny commit.

Make doc tests pass

Didn't know these would immediately be treated as tests

Update README.md

Update README.md

Refactor

* Reprecated rstring to rename to rstr to better reflect using &str type.
* Bumped to 0.5.0
* C Types are in snake case
* Fix clippy lints
* Add a prelude that includes lua functions and basic types.
* Make exposed symbols static instead of const as they should be..
* Added unit test for cstr! function
* Put interface stuff under new ``interfaces`` feature (default enabled).