Implement merge of staging trees to primary.

Also, created an archive directory where stage trees are moved to after
they've been merged.

Closes #26.
Closes #22.
Remove Vim modeline.

These modeline settings are now my defaults.
Notes on replication, revision ids.
Use numbers for stage tree directory names.

Closes #28.
Upgrade Proof to 0.0.33.

Closes #29.
Tidy `package.json`.

Closes #31.
Add a `bugs` property to `package.json`.

Closes #32.
Implement LevelDOWN open tests, `errorIfExists`.

Closes #35.
Closes #34.
Further tidy `pacakge.json`.
Upgrade Proof to 0.0.34.

Closes #37.
Invoke AbstractLevelDOWN tests from Proof.

Closes #38.
Ship coverage to web server.

Closes #39.
Further tidy of `package.json`.
Upgrade to Proof 0.0.36.

Closes #40.
Upgrade Strata to 0.0.5.

Closes #41.
Fix left most iterator creation.

Didn't actually test against the latest Strata.

See #41.
Add LevelUP `util.js`.

Closes #42.
Upgrade AbstractLevelDOWN to 0.11.

Closes #43.
Roughest draft of binary serialization.

See #44.
Upgrade Strata to 0.0.6.

Upgrade to Strata 0.0.6 to get a `deserialize` invocation that passes a
`Buffer` and not a `String`.

Closes #45.