Code simplification
- Use faster double-caluclation for time
- Avoid unncessary check for logger level enabled
Fix issues in elapsed time handling:
- Use double instead of BigDecimal for elapsed time handling
- Better formating
- Fix problem of treating slowQueryThreshold in config as nano seconds
instead of milliseconds.
Give choice of displaying parameter inline in the SQL (default, and
behavior of jdbcdslog-exp), or displaying SQL untouched with parameter
display separately (similar to behavior of original jdbcdslog)