Add 'last run' timestamps for recurring events, and take these into

account when firing events on daemon rescheduling (via HUP.)

FossilOrigin-Name: 1620e80e8bddd27741569dea0ff4bd84ba29429861ed49d17f5777c238ae4876

data/symphony-metronome/migrations/20141028_lastrun.rb

@@ -0,0 +1,23 @@
+# vim: set nosta noet ts=4 sw=4:
+
+### Add a 'lastrun' time stamp for recurring events.
+###
+class Lastrun < Sequel::Migration
+
+	def initialize( db )
+		@db = db
+	end
+
+	def up
+		if @db.adapter_scheme == :postgres
+			add_column :metronome, :lastrun, timestamptz
+		else
+			add_column :metronome, :lastrun, DateTime
+		end
+	end
+
+	def down
+		drop_column :metronome, :lastrun
+	end
+end
+