Properly handle diacritics about case HOT 5 CLOSED

Looking into it... It appears my regex's are not diacritic savvy. This may take a little time. I'll look into it, if no one beats me too it.

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I searched for 10 minutes and looks like js' regex and Unicode sux... big time. You can see on Stack Overflow results all sorts of magic stuff; not really that classy.

Looks like that the least hackish way to accomplish this is to rely on an external library to do the job, such as xregexp. But that would mean adding it as a dependency and replacing js' RegExp calls...

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Blech. Case is too small for dependencies. There may be simpler ways. Not giving up on this yet. :)

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Ok, i think i can pretty easily support at least this much unicode: http://www.utf8-chartable.de/ That'll give us common diacritics, as well as a better range of symbols that can be "filled".

Pressing on to the second page gets more difficult, as the smalls and capitals begin to alternate both rapidly and inconsistently. http://www.utf8-chartable.de/unicode-utf8-table.pl?start=256 Pressing on beyond latin into greek shows little end to the challenge.

Eventually, i'd like to make Case's regexps officially extensible so that it's not too hard for people to create things like a Case.greek.js extension.

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Ok, so you can now easily extend/replace the regexp set like so:

Case._.re = Case._.regexps([symbols][, lowers, uppers][, impropers]);

The four parameters are the logical expressions needed to make all the different transformations supported out of the box by Case. The first three should be strings that will go inside regexp character sets (e.g. new RegExp('['+symbols+']', 'g')). The impropers should be a regexp string that matches words that shouldn't be capitalized in title case (e.g. 'A|An|The' and so on). If any are missing, they will be filled in with the default ones.

Also, the symbols regexps are no longer exclusive but inclusive, meaning that you will never see the disappearing letter problem again.

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