Move partition and rpartition to new strmisc module

This was done because partition is an uncommonly used proc that is still
useful in rare cases. There is also a desire to add more procs to this
module at a later time.

web/news/version_0_15_released.rst

@@ -17,6 +17,15 @@ Library Additions
 - Added ``readHeaderRow`` and ``rowEntry`` to ``parsecsv.nim`` to provide
   a lightweight alternative to python's ``csv.DictReader``.
 
+- Added ``center``, ``rsplit``, and ``expandTabs`` to ``strutils.nim`` to
+  provide similar Python functionality for Nim's strings.
+
+- Added ``isTitle``, ``title``, and ``swapCase`` to ``unicode.nim`` to
+  provide unicode aware string case manipulation.
+
+- Added a new module ``lib/pure/strmisc.nim`` to hold uncommon string
+  operations. Currently contains ``partition`` and ``rpartition``.
+
 Compiler Additions
 ------------------
 

web/website.ini

@@ -43,7 +43,7 @@ srcdoc2: "pure/stats;impure/nre;windows/winlean;pure/random"
 srcdoc2: "pure/complex;pure/times;pure/osproc;pure/pegs;pure/dynlib;pure/strscans"
 srcdoc2: "pure/parseopt;pure/parseopt2;pure/hashes;pure/strtabs;pure/lexbase"
 srcdoc2: "pure/parsecfg;pure/parsexml;pure/parsecsv;pure/parsesql"
-srcdoc2: "pure/streams;pure/terminal;pure/cgi;pure/unicode"
+srcdoc2: "pure/streams;pure/terminal;pure/cgi;pure/unicode;pure/strmisc"
 srcdoc2: "pure/htmlgen;pure/parseutils;pure/browsers"
 srcdoc2: "impure/db_postgres;impure/db_mysql;impure/db_sqlite"
 srcdoc2: "pure/httpserver;pure/httpclient;pure/smtp;impure/ssl;pure/fsmonitor"