Implemented enhancements:
- Traces should be more granular #466
- Implement table locking #410
- Implement SHOW CREATE DATABASE #407
- Add configuration per engine instance and per session #109
Fixed bugs:
- pilosa holder has to sync up data with indexes #472
- No holder! #478
Merged pull requests:
- update license with year and org name #475
- Fix Apache License #473
- sql: add timing info to span traces #470
- sql: implement SHOW CREATE DATABASE statement #460
- *: implement LOCK and UNLOCK of tables #448
- sql: plan: Add SHOW CREATE TABLE [Fix #406] #435
