Rename headers to properties
Merge pull request #16 from odolbeau/feat-rename-headers

Rename headers to properties
Remove a post-incrementation when it should not do it yet
Make tests a little bit more rigorous
Merge pull request #15 from Taluu/fix-attempts

Wrong attempts incrementation
Correct RetryProcessor
Merge pull request #17 from odolbeau/feat-correct-retry

Correct RetryProcessor
Add more detailled informations about message properties
Merge pull request #19 from odolbeau/add-informations

Add more detailled informations about message properties