Fix example and clean up

README.md

@@ -145,7 +145,7 @@ animals = create_table (
     (
         ("rover", "cat", 14),
         ("spot", "snake", 9),
-        ("bob", "giraffe", 2),
+        ("bob", "giraffe", 2)
     )
 );
 ```
@@ -163,14 +163,16 @@ The commands `create_table` and `insert` make sure that all of the memory used t
 ```dust
 insert(
     animals,
-    ("eliza", "ostrich", 4),
-    ("pat", "white rhino", 7),
-    ("jim", "walrus", 9)
+    (
+        ("eliza", "ostrich", 4),
+        ("pat", "white rhino", 7),
+        ("jim", "walrus", 9)
+    )
 );
 
-assert_eq(length(animals.all), 6);
+assert_equal(count(animals.all), 6);
 
-sorted = sort(animals, "name");
+sorted = sort(animals);
 ```
 
 ### The Yield Operator

src/tools/mod.rs

@@ -50,13 +50,14 @@ pub mod time;
 /// Master list of all tools.
 ///
 /// This list is used to match identifiers with tools and to provide info to the shell.
-pub const TOOL_LIST: [&'static dyn Tool; 50] = [
+pub const TOOL_LIST: [&'static dyn Tool; 51] = [
     &collections::Count,
     &collections::CreateTable,
     &collections::Insert,
     &collections::Rows,
     &collections::Select,
     &collections::String,
+    &collections::Sort,
     &collections::Replace,
     &collections::Transform,
     &collections::Where,

src/value/value_type.rs

@@ -34,9 +34,9 @@ impl PartialEq for ValueType {
             (ValueType::ListExact(left), ValueType::ListExact(right)) => left == right,
             (ValueType::ListExact(_), ValueType::List) => true,
             (ValueType::List, ValueType::ListExact(_)) => true,
+            (ValueType::ListOf(left), ValueType::ListOf(right)) => left == right,
             (ValueType::ListOf(_), ValueType::List) => true,
             (ValueType::List, ValueType::ListOf(_)) => true,
-            (ValueType::ListOf(left), ValueType::ListOf(right)) => left == right,
             (ValueType::ListOf(value_type), ValueType::ListExact(exact_list))
             | (ValueType::ListExact(exact_list), ValueType::ListOf(value_type)) => {
                 if exact_list