Update vendored Sqlite3-ruby to 1.3.0

Also, some tweaks to Maruku.

vendor/plugins/sqlite3-ruby/Rakefile

@@ -1,5 +1,10 @@
-require 'rubygems'
-require 'rake'
+#
+# NOTE: Keep this file clean.
+# Add your customizations inside tasks directory.
+# Thank You.
+#
 
 # load rakefile extensions (tasks)
-Dir['tasks/*.rake'].each { |f| import f }
+Dir['tasks/*.rake'].sort.each { |f| load f }
+
+# vim: syntax=ruby