Data updates for Sep 2015, data visualisations, HFE filtered CSV download.

The following changes have been published in this release:

  1. Update: Data download files updated with September 2015 data (when applicable).
  2. New: Graphs section with data visualisations.
  3. New: Horizontal Flight Efficiency filtered CSV download page.
  4. New: Search capability via DuckDuckGo search engine.
  5. Update: little aesthetic enhancements.