Readme changelog improvement
Preparing for 2.3.0 release, adding readme stuff
Bumping deps
Updated minified version
Implement count without String's split

split creates an array that is (in this case) immediately thrown away. 
This produces unnecessary garbage and its (arguably) faster (see indexOf 1.2): 
http://jsperf.com/count-string-occurrence-in-string/10

The downside is that substr can no longer be a RegExp, but this was not
intended (at least according with the docs).
Fixes issue when substr is a number

Now we make sure that substr is a string.
Updated test suite

Updated underscore 1.4.2
Merge pull request #150 from lfac-pt/master

Implement count without split
Small codestyle changes for count method
Fixed test suite
Underscore.string tries all available integration methods in order

Fixed #148
a little fix
Escape HTML uses &#39; instead of &apos;

Closes #153
allow the use of an empty string as a thousands separator in numberFormat()
Merge pull request #152 from alsotang/master

just a little fix
Merge pull request #154 from wyuenho/master

allow the use of an empty string as a thousands separator in numberFormat()
Fixed toNumber with funny strings as an argument

Closes #157
More sane classify behavior

closes #158
Added support for polish letter 'ś' to slugify()
Merge pull request #169 from lzrski/master

Added support for polish letter 'ś' to slugify()