Release 1.2.1

- Fix error checking tests

- Update testing framework
- Use $::netmask as default for $dhcp::subnet::netmask (GH camptocamp#20)
- Add RedHat/CentOS support (GH camptocamp#19)

Release version 1.1.2

Release 1.1.1

Release version 1.1.0

Release version 1.0.1

Release 1.0.0

Release version 0.5.13

Release 0.5.12

Release version 0.5.11