Sync documentation from master branch

docs/API.md

@@ -1115,12 +1115,13 @@ This section is an alphabetic listing of all the functions, objects, and macros
 [`string-for-each`](api/scheme/base#string-for-each)
 [`string-hash                   `](api/srfi/128#string-hash)
 [`string-hash`](api/srfi/69#string-hash)
-[`string-join`](api/scheme/cyclone/cgen#string-join)
+[`string-join`](api/scheme/cyclone/util#string-join)
 [`string-length         `](api/primitives#string-length)
 [`string-map`](api/scheme/base#string-map)
 [`string-ref            `](api/primitives#string-ref)
 [`string-replace-all         `](api/scheme/cyclone/util#string-replace-all)
 [`string-set!           `](api/primitives#string-set)
+[`string-split`](api/scheme/cyclone/util#string-split)
 [`string-upcase`](api/scheme/char#string-upcase)
 [`string<=?`](api/scheme/base#string-1)
 [`string<?`](api/scheme/base#string-2)

docs/api/scheme/cyclone/cgen.md

@@ -13,7 +13,6 @@ The `(scheme cyclone cgen)` library compiles scheme code to a Cheney-on-the-MTA
 - [`emits`](#emits)
 - [`emits*`](#emits-1)
 - [`emit-newline`](#emit-newline)
-- [`string-join`](#string-join)
 
 # mta:code-gen
 
@@ -51,9 +50,4 @@ Call `emits` for each of the given strings.
 
 `display` a newline to the current output port.
 
-# string-join
-
-    (string-join list deliminator)
-
-Create a single string from a list of strings, adding `deliminator` between each of the strings.
 

docs/api/scheme/cyclone/util.md

@@ -65,7 +65,9 @@ The `(scheme cyclone util`) library contains various utility functions.
 - [`set!->exp                  `](#set-exp)
 - [`set!->var                  `](#set-var)
 - [`set!?                      `](#set)
+- [`string-join                `](#string-join)
 - [`string-replace-all         `](#string-replace-all)
+- [`string-split               `](#string-split)
 - [`tagged-list?               `](#tagged-list?)
 - [`take                       `](#take)
 
@@ -185,8 +187,21 @@ The `(scheme cyclone util`) library contains various utility functions.
 
 # set!? 
 
+# string-join
+
+    (string-join list deliminator)
+
+Create a single string from a list of strings, adding `deliminator` between each of the strings. `deliminator` may be either a character or string.
+
 # string-replace-all
 
+# string-split
+
+    (string-split string deliminator)
+
+Create a list of strings from the given string, creating a new one at each instance of the `deliminator` character.
+
+
 # tagged-list?
 
 # take