Release Strata version 2.0.0-alpha.93.

 * Update for dependency upgrades.
 * Upgrade `interrupt` to `11.0.0-alpha.18`.
 * Upgrade `operation` to `6.0.0-alpha.6`.
 * Upgrade `writeahead` to `0.0.25`.
 * Upgrade `fracture` to `0.3.0-alpha.47`.
 * Upgrade `extant` to `^2.0.0-alpha.0`.
 * Upgrade `destructible` to `7.0.0-alpha.48`.
 * Upgrade `rescue` to `7.0.0-alpha.11`.
 * Upgrade `journalist` to `0.1.22`.
 * Upgrade `turnstile` to `6.0.0-alpha.57`.

Closes #762.

package.json

@@ -1,6 +1,6 @@
 {
     "name":                 "b-tree",
-    "version":              "2.0.0-alpha.92",
+    "version":              "2.0.0-alpha.93",
     "description":
 
       "Async/Await I/O B-tree in pure JavaScript for Node.js.",