Use POST method for #filter
Don't define user_agent accessor
Replace be_false with be false
Replace be_true with be true
Replace have with size
Merge pull request #462 from yous/master

Use POST method for #filter
Lock mime-types to ~> 1.25 on Ruby 1.8
Use memoizable
Oh, the things I do for Ruby 1.8 compatibility...

So, it turns out that in Ruby 1.8, methods defined with define_method
return an arity of -1 unless you explicitly state that no arguments are
passed. This breaks memoization, which currently only works on
zero-arity methods.
Update ERD
Add new error codes
Prepare for version 5.0.0 release
Replace Pledgie with Gittip [ci skip]
Update versioning statement for 5.0.0 [ci skip]
Ignore failures on Rubinius
Ignore failures on JRuby
Correcting some mismatched test descriptions
Merge pull request #486 from sbalentine/patch-1

Correcting some mismatched test descriptions
Update buftok dependency to version ~> 0.2.0

Closes #484.
Started handling delete