Merge pull request #336 from Enmk/fix_issue_335_no_connection_attempts

Fixed issue #335 by making at least one connection attempt

Merge pull request #333 from Enmk/set-backward_compatibility_lowcardi…

…nality_as_wrapped_column-deafult_value_to_false

Set backward_compatibility_lowcardinality_as_wrapped_column default value to false

Merge pull request #300 from Enmk/deprecate_LowCardinalitySerializati…

…onAdaptor

Minor: Deprecated LowCardinalitySerializationAdaptor

Merge pull request #249 from 1261385937/performance_improve

ColumnString improve performance(26%) by avoiding vector reallocate

Update README.md

Update LICENSE

Updated reported client version to be "2.1"

Merge pull request #112 from ClickHouse/remove-o2

Remove unnecessary -O2 flag

Updated link to official ClickHouse website

Merge pull request #53 from Enmk/fix_LowCardinality_Empty_value

Fix of LowCardinality bug: empty string converted to other value on INSERT