Log Message:
databases/ruby-sequel: update to 5.21.0

=== 5.21.0 (2019-06-01)

* Recognize additional DatabaseLockTimeout errors in mysql and mysql2 adapters \ 
(jeremyevans)

* Disallow eager_graph of ancestors and descendants associations when using the \ 
rcte_tree plugin (jeremyevans)

* Make jdbc/mysql adapter work when using JRuby with Java 11 (jeremyevans)

* Support window function options :window, :exclude, and :frame \ 
:type=>:groups, :start, and :end on SQLite 3.28.0+ (jeremyevans)

* Make the server_block extension respect the :servers_hash Database option \ 
(jeremyevans)

* Typecast string input for json/jsonb types as JSON strings instead of parsing \ 
as JSON in the pg_json extension when Database#typecast_json_strings is set to \ 
true (jeremyevans)

* Wrap JSON primitives (string, number, true, false, nil) in the pg_json \ 
extension when Database#wrap_json_primitives is set to true (jeremyevans)

* Convert the Database :timeout option to an integer in the sqlite adapter \ 
(jeremyevans) (#1620)

* Improve performance in ado adapter using more efficient inner loop (jeremyevans)

* Improve performance in ado adapter using faster callables for type conversion \ 
(jeremyevans)

* Fix handling of decimal values in the ado adapter when using locales where the \ 
decimal separator is , and not . (jeremyevans) (#1619)