Problem: not enough extensions

Solution: add recently published pg_incremental

Author: yrashk

packages/pg_incremental.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class PgIncremental < Pgpm::Package
+  github "crunchydata/pg_incremental"
+
+  def requires
+    super + [Pgpm::Package["pg_cron"][:latest]]
+  end
+end