Bump npm version to 0.18.0-pre.1.

Bump npm version to 0.18.0-pre.0.

Bump optimism npm version to 0.16.2.

Bump npm version to 0.16.1.

Bump npm version to 0.16.0.

The minor version bump is due to the addition of getKey, dirtyKey,
peekKey, and forgetKey methods to OptimisticWrapperFunction.

Bump npm version to 0.15.0.

The minor version bump is due to the upgrade of tslib from version 1.14.1
to version 2.1.0.

Bump npm version to 0.14.1.

Bump npm version to 0.14.0.

Although no visible behavioral changes are expected, the minor version
bump is due to #121, which introduced a new dependency, @wry/trie.

Bump npm version to 0.13.2.

Bump npm version to 0.13.1.