switched to fast interpreter by default. to use classic interpreter, …

…type :classic at REPL

fast: updated README.md

fast/README.md

@@ -8,7 +8,7 @@ If you want to help with the reimplementation, or you are simply curious, read o
 
 ## Current Status
 
-BETA.
+STABLE.
 
 The fast interpreter supports:
 * multiline input - shared with the classic interpreter
@@ -36,7 +36,7 @@ The fast interpreter supports:
 * imports
   * Go standard packages "just work"
   * importing other packages requires the "plugin" package (available only on Linux with Go 1.8+)
-* ~quote
+* ~quote, ~quasiquote, ~unquote, ~unquote_splice
 * macro declarations, for example `macro foo(a, b, c interface{}) interface{} { return b }`
 * macro calls, for example `foo; x; y; z`
 
@@ -45,7 +45,6 @@ Missing features - you are welcome to contribute:
 * interfaces. They can be declared, but nothing more: there is no way to implement them or call their methods
   (interfaces declared in compiled code can be used, but not yet implemented by interpreted code)
 * conversion from/to interpreted interfaces
-* ~quasiquote, ~unquote, ~unquote_splice
 
 Current limitations:
 * named types declared by interpreted code are approximated.