bump to version 0.8.2

bump to 0.8.1

Update README.markdown

5.0 compatibility and link to latest version of Zabbix API doc

bump to 0.7.5

version bump to 0.7.4, it's time

Bump version to 0.5

Bump version to 0.4

Merge pull request lukecyca#5 from ekohl/pep8

pep8 compliance