Merge pull request #241 from rodrigosaito/master

Handle sinatra errors
Give params_filter a setter so it can be *set* (not only appended to)
Merge pull request #251 from airbrake/fix-params_filter-not-a-setter

Give params_filter a setter so it can be *set* (not only appended to)
enable pry debugging in tests
add test for #251
enable filtering of sensitive Rack vars by default

see #185 for more details
Support sucker_punch for async processor
Merge pull request #258 from damonmorgan/feature/sucker_punch

Support sucker_punch for async processor
Airbrake rakefile is not compatible with Capistrano v3
fix deploy uri
Merge pull request #261 from roqua/mv-airbrake-capistrano-dep

Airbrake rakefile is not compatible with Capistrano v3
start using MultiJson
Bumping to version 3.1.15