[charmod-norm] add section for other kinds of equivalence

aphillips has just created a new issue for 

== add section for other kinds of equivalence ==
Outside of Unicode normalization and case folding, there exist certain
 types of "interesting equivalence" that may be useful, particularly 
in searching text. For example, Japanese uses two syllabic scripts, 
`hiragana` and `katakana`. A user searching a document may type in one
 script, but wish to find equivalent text in the other script. This 
equivalence exists outside of Unicode, but can affects features like 
text find. Acknowledging these kinds of variations and documenting 
them for users could be useful?

See https://github.com/w3c/charmod-norm/issues/23

Received on Friday, 23 October 2015 16:54:08 UTC