Release Prolific 27.0.0-alpha.4.
Release Prolific 27.0.0-alpha.4.

 * Processors are now full CommonJS modules. See #1004. See #1003.
 * Log processing error. Closes #1134.
 * Create processors using contextualized require. See #1003.
 * Remove Descendant depenency. Closes #1061.
 * Remove unused `p-queue` dependency. Closes #1137.
 * Add an end-of-stream entry. Closes #1135.

Closes #1159.

bigeasy/prolific,bigeasy/prolific