Change-log.md

@@ -2,6 +2,19 @@
 
 Please note all dates are expressed as [ISO-8601](http://en.wikipedia.org/wiki/ISO_8601).
 
+# 4.0 - 2014/12/03
+
+## New features
+
+* POST support added for `[/sequence]` endpoints
+* New VEP endpoint `[/hgvs]` to retrieve consequence data based on a HGVS notation
+* `population_genotype` option added to `[/variation]` endpoint
+* `failed_variation` field added to `[/variation]` endpoints
+* `segmentation`, `motif`, `chipseq`, `array_probe` and `feature_type` options added to `[/overlap]` endpoint
+* `Accept` supported for POST endpoints, to specify the output format of your choice
+* `orthoXML` format added for `[/homology]` endpoints
+* `coordinate_system` field changed to `coord_system` in `[/info/assembly_info]` endpoint
+
 # 3.1.0 - 2014/10/02
 
 ## New Features: