mtext 2.0 release (dstring)

[Chris Miller]

The mtext module contains the mstring Unicode string structure, which  
stores strings in a format that is easiest to index, slice, and access  
UTF-32 (dchar) code points, as well as attempts to be space efficient.

Download and more information: http://www.dprogramming.com/mtext.php
Documentation: http://www.dprogramming.com/docs/mtext/mtext.html

mtext, previously known as dstring, adds the following in version 2.0:
  * support for both Phobos and Tango;
  * allocators, allowing more control over memory usage, especially when  
the garbage collector is not desired;
  * updated the code to work better with modern D compilers, such as using  
opAssign;
  * and made name changes to work better with D's standard string and  
dstring types.

- Chris Miller (the original)