mountinfo v0.3.0

Breaking changes:

• Some field names of struct Mountinfo are changed to be more in-line with Go naming conventions. Users need to be converted. (#34)

Fixes and improvements:

• Fixed per-package doc to be shown by go doc (#37)
• Make GetMountsFromReader Linux-specific. (#39)
• OpenBSD support added (same code as FreeBSD; not tested). (#32)

Thanks to:

• Sebastiaan van Stijn
• Tobias Klauser