VERY basic UTF8 parser

doc/pages/expand_path.txt

@@ -1,8 +1,9 @@
 :sig
-String expand_path(String path)
+String expand_path(String path, String relative_to_path = "")
 
 :params
 path : a relative path
+relative_to_path : optional, expand relative to this path (if not given, the current path is used)
 return value : expanded version of the 'path'
 
 :desc

doc/pages/split_utf8.txt

@@ -0,0 +1,15 @@
+:sig
+StringList split_utf8(String str)
+
+
+:params
+str : string to be split
+return value : a list of Unicode characters
+
+:desc
+Splits the string 'str' into its constituent Unicode code points.
+
+This currently does not honor compound characters such as flags or composite emojis.
+
+:see
+>string