Log Message:
Update ruby-mime-types to 2.6.1.

== 2.6.1 / 2015-05-25

* Bugs:
  * Make columnar store handle all supported extensions, not just the first.
  * Avoid circular require when using the columnar store.

== 2.6 / 2015-05-25

* New Feature:
  * Columnar data storage for the MIME::Types registry, contributed by Jeremy
    Evans (@jeremyevans). Reduces default memory use substantially (the mail
    gem drops from 19 Mib to about 3 Mib). Resolves
    {#96}[https://github.com/mime-types/ruby-mime-types/pull/96],
    {#94}[https://github.com/mime-types/ruby-mime-types/issues/94],
    {#83}[https://github.com/mime-types/ruby-mime-types/issues/83]. Partially
    addresses {#64}[https://github.com/mime-types/ruby-mime-types/issues/64]
    and {#62}[https://github.com/mime-types/ruby-mime-types/issues/62].
* Development:
  * Removed caching of deprecation messages in preparation for mime-types 3.0.
    Now, deprecated methods will always warn their deprecation instead of only
    warning once.
  * Added a logger for deprecation messages.
  * Renamed <tt>lib/mime.rb</tt> to \ 
<tt>lib/mime/deprecations.rb</tt> to not
    conflict with the {mime}[https://rubygems.org/gems/mime] gem on behalf of
    the maintainers of the {Praxis Framework}[http://praxis-framework.io/].
    Provided by Josep M. Blanquer (@blanquer),
    {#100}[https://github.com/mime-types/ruby-mime-types/pull/100].
  * Added the columnar data conversion tool, also provided by Jeremy Evans.
* Documentation:
  * Improved documentation and ensured that all deprecated methods are marked
    as such in the documentation.
* Development:
  * Added more Ruby variants to Travis CI.
  * Silenced deprecation messages for internal tools. Noisy deprecations are
    noisy, but that's the point.

== 2.5 / 2015-04-25

* Bugs:
  * David Genord (@albus522) fixed a bug in loading MIME::types cache where a
    container loaded from cache did not have the expected +default_proc+,
    {#86}[https://github.com/mime-types/ruby-mime-types/pull/86].
  * Richard Schneeman (@schneems) provided a patch that substantially reduces
    unnecessary allocations.
* Documentation:
  * Tibor Szolár (@flexik) fixed a typo in the README,
    {#82}[https://github.com/mime-types/ruby-mime-types/pull/82]
  * Fixed {#80}[https://github.com/mime-types/ruby-mime-types/issues/80],
    clarifying the relationship of MIME::Type#content_type and
    MIME::Type#simplified, with Ken Ip (@kenips).
* Development:
  * Juanito Fatas (@JuanitoFatas) enabled container mode on Travis CI,
    {#87}[https://github.com/mime-types/ruby-mime-types/pull/87].
* Moved development to a mime-types organization under
  {mime-types/ruby-mime-types}[https://github.com/mime-types/ruby-mime-types].