Release Strata version 2.0.0-alpha.108.
Release Strata version 2.0.0-alpha.108.

 * Upgrade `writeahead` to `0.0.42`.
 * Upgrade `fracture` to `0.3.0-alpha.65`.
 * Upgrade `destructible` to `7.0.0-alpha.65`.
 * Upgrade `journalist` to `0.1.26`.
 * Upgrade `turnstile` to `6.0.0-alpha.76`.
 * Spell check comments.

Closes #777.

bigeasy/strata,bigeasy/strata