Further README rewording, based on comments in #92

Author: SquidDev

README.md

@@ -4,10 +4,12 @@ Cobalt is a Lua implementation for Java, designed for use in the Minecraft mod
 significantly over the years.
 
 ## Features
-Cobalt implements a (mostly) compliant Lua 5.1 implementation, with several
+Cobalt is a (mostly) compliant implementation of Lua 5.2, with several
 interesting additional features:
 
- - Backports much of the Lua 5.2-5.4 standard library.
+ - Backwards compatibility with Lua 5.1 (`getfenv`/`setfenv`, `goto` as an
+   identifier).
+ - Backports much of the Lua 5.3 and 5.4 standard library.
  - Allows yielding _anywhere_ within a Lua program, including debug hooks and
    inside any native function.
  - Support for interrupting and resuming the VM at arbitrary points.