v0.2.3

ClickHouse v0.2.3

Diff since v0.2.2

Merged pull requests:

• added Bool columntype (#31) (@eduartos)
• allow enum empty strings (#32) (@eduartos)
• Implement LZ4 transport compression (#33) (@DylanModesitt)
• remove unnecessary generic type parameters to avoid warning messages (#35) (@rbeeli)

Closed issues:

• Transport compression (LZ4, ZStd) (#8)
• Clean-up warning due to unused generic type parameter (#34)