Moved include_lib(".../exml.hrl") into jlib.hrl.
Inluded jlib.hrl.
Refactored #xmlel{}.
Deleted empty record updates.
Use upstream lager
Allow request retransmission even if no response is cached
Merge pull request #85 from esl/lager-upstream

Use upstream lager
Merge pull request #83 from arcusfelis/arc-exml-records

Replaced exml tuples with records.
use exml 2.0.1