Merge pull request #34 from kris-lab/issue-34

Fix bug with json lib
Cast plugin data to hash, raise error if empty
Catch and log exceptions in binary
Use e.message instead of .inspect
Add stacktrace to fatal error
Revert test-error
Bump version
Remove memcache maxbytes metric
Remove mysql sent/received bytes
Remove mysql max connections
Remov mysql processlist sending data
Don't bump version yet..
Merge pull request #35 from njam/issue-35

Improve error handling
Merge pull request #36 from njam/issue-36

Remove unimportant metrics
Bump version
Merge pull request #38 from njam/issue-38

Bump version
Use to_hash instead of to_h
Bump version
Merge pull request #39 from njam/issue-39

Replace to_h with to_hash