Release 1.2.0 (24 July 2014)

## General
 - New! Allow user-specified date patterns: `--timestring` #111 (untergeek)
 - New! Curate weekly indices (must use week of year) #111 (untergeek)
 - New! Log output in logstash format `--logformat logstash` #111 (untergeek)
 - Updated! Cleaner default logs (debug still shows everything) (untergeek)
 - Improved! Dry runs are more visible in log output (untergeek)

## Errata
 - The `--separator` option was removed in lieu of user-specified date patterns.
 - Default `--timestring` for days: %Y.%m.%d (Same as before)
 - Default `--timestring` for hours: %Y.%m.%d.%H (Same as before)
 - Default `--timestring` for weeks: %Y.%W