Log Message:
Update to 0.1.9:

Release 0.1.9 (Sep 28, 2013)
----------------------------

Bug Fixes
* Fix an regression introduced in 0.1.5 where sqlparse didn't properly
  distinguished between single and double quoted strings when tagging
  identifier (issue111).

Enhancements
* New option to truncate long string literals when formatting.
* Scientific numbers are pares correctly (issue107).
* Support for arithmetic expressions (issue109, issue106; by prudhvi).