SO MUCH NEW DOCS OH WOW.

doc/site/index.markdown

@@ -1,22 +1,28 @@
 ^title Welcome
 
-Wren is a *small, clean, fast, class-based scripting language.* Think Smalltalk
-in a Lua-sized package.
+## Wren is a small, fast, class-based concurrent scripting language
+
+Think Smalltalk in a Lua-sized package with a dash of Erlang and wrapped up in
+a familiar, modern [syntax][].
 
     :::dart
     IO.print("Hello, world!")
 
     class Wren {
-      adjectives { ["small", "clean", "fast"] }
-      languageType { "scripting" }
+      flyTo(city) {
+        IO.print("Flying to ", city)
+      }
     }
 
- *  **Wren is small.** The codebase is under 4,000 semicolons which keeps the
-    language and libraries small enough to fit in your head. You can skim
-    [the whole thing][src] in one sitting.
+    var adjectives = new Fiber {
+      ["small", "clean", "fast"].map {|word| Fiber.yield(word) }
+    }
 
- *  **Wren is clean.** The codebase is *small*, but not *dense*. It is readable
-    and [lovingly-commented][nan]. It's written in warning-free standard C99.
+    while (!adjectives.isDone) IO.print(adjectives.call)
+
+ *  **Wren is small.** The codebase is about [5,000 lines][src]. You can
+    skim the whole thing in an afternoon. It's *small*, but not *dense*. It
+    is readable and [lovingly-commented][nan].
 
  *  **Wren is fast.** A fast single-pass compiler to tight bytecode, and a
     compact object representation help Wren [compete with other dynamic
@@ -26,12 +32,19 @@ in a Lua-sized package.
     but many have unusual or non-existent object models. Wren places
     [classes][] front and center.
 
+ *  **Wren is concurrent.** Lightweight [fibers][] are core to the execution
+    model and let you organize your program into an army of communicating
+    coroutines.
+
  *  **Wren is a scripting language.** Wren is intended for embedding in
     applications. It has no dependencies, a small standard library,
-    and [an easy-to-use C API][embedding].
+    and [an easy-to-use C API][embedding]. It's written in warning-free
+    standard C99.
 
+[syntax]: syntax.html
 [src]: https://github.com/munificent/wren/tree/master/src
 [nan]: https://github.com/munificent/wren/blob/46c1ba92492e9257aba6418403161072d640cb29/src/wren_value.h#L378-L433
 [perf]: performance.html
 [classes]: classes.html
+[fibers]: fibers.html
 [embedding]: embedding-api.html