Add Sequences to API.

pkg/client/client.go

@@ -136,6 +136,10 @@ func (client *Client) TableIndexes(table string) (*Result, error) {
 	return res, err
 }
 
+func (client *Client) Sequences() ([]string, error) {
+	return client.fetchRows(statements.PG_SEQUENCES)
+}
+
 // Returns all active queriers on the server
 func (client *Client) Activity() (*Result, error) {
 	return client.query(statements.PG_ACTIVITY)