Improve code formatting

[paustint]

Description

With #36, basic code formatting was implemented, but it leaves a lot to be desired.
Main areas for improvement:

• 1. Better formatting of subqueries in WHERE IN clause
  • unit tests
• 1. Better formatting for nested parens in WHERE clause
  • unit tests
• 1. Better subquery formatting (optionally put parens on their own line)
  • unit tests
• 1. More user options
  • unit tests
• 1. Always have CLAUSE statements on own line SELECT\n\tId, Name\nFROM\n\tAccount
  • NOTE: fieldMaxLineLen=0 achieves this for fields in current state
  • unit tests