Merge pull request k3s-io#12 from ibuildthecloud/master

Fix issue in which More is never set

Merge pull request k3s-io#11 from ibuildthecloud/master

Make revision consistent for empty sets

Merge pull request k3s-io#10 from ibuildthecloud/master

Fix pessimestic update revision check

Merge pull request k3s-io#9 from ibuildthecloud/master

Detect "unique constraint" errors and return ErrKeyExists

Merge pull request k3s-io#8 from ibuildthecloud/master

Ensure that polling doesn't skip initial rows

Merge pull request k3s-io#7 from ibuildthecloud/dqlite

Add dqlite support

Merge pull request k3s-io#3 from ibuildthecloud/gap

Attempt to ensure that watch is always sequential

When unique constraint is hit on delete, return false not err