0.2.0

Added

• Added NamedLock::with_path on UNIX (#2, #4)

Changed

• NamedLock::create on UNIX respects TMPDIR environment variable (#1, #4)
• NamedLock::create now rejects names that contain / or \ characters (#2, #4)
• NamedLock::create on Windows explicitly creates a global mutex
• Error::CreateFailed now has the source of the error
• Upgrade all dependencies