fix failing test on travis
prepare release 0.41.3
re-use empty types in SQLResponse

and remove unused requestStartedTime(long requestStartedTime)
fixed incorrect order in changelog
correctly serialize nested sys expressions

of type string
fix possible NPEs in sys object and object array expressions
Merge pull request #1072 from crate/m/string_sys_expressions

correctly serialize nested sys expressions
fix: using the is not null predicate on a non-existing or ignored column
did throw an exception
add bulkArgs to SQLRequest
Added benchmark test to compare bulk inserts with multiple insert statements
check bulk_args for mixed types
use BulkShardProcessor instead of TransportBulkAction
support inserts using bulk arguments
create XContent instead of Maps in InsertAnalyzer
set autoCreateIndices value correctly in ESBulkIndexTask
documentation: rest: describe Bulk Operations.
avoid bytesRef/String conversion in InsertFromValuesAnalyzer

XContentBuilder can handle utf8 bytes if wrapped inside a
class that implements the Text interface.
Merge pull request #1050 from crate/l/docs-bulk-operations

documentation: rest: describe Bulk Operations.
documentation: clients: fix: typo, wrong method call, 85 chars.
documentation: native java client: describe Bulk Operations