added release notes for 09/14/2017 API release

release-notes.md

@@ -1,3 +1,12 @@
+## 14 September 2017
+
+### New features
+* We've beefed up downloaders for OpenAddresses, OpenStreetMap, and Who's On First to download subsets of data.  
+* The alpha3 flag for country codes have been obsolete for quite some time now but we've removed all vestiges of it.
+
+### Bug fixes
+* Some OpenAddresses records have lon/lat at 0/0 meaning that, unless you have a ocean-going yacht and pretty sturdy jet ski, you can't get to addresses there (note to self: start "Pelias for Yachts").  We've now excluded those from the build.  
+
 ## 22 August 2017
 ### New features
 * We now support the ability to specify the admin hierarchy part of an address query in any language