update changelog before release

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## [Unreleased]
 
+## [0.2.0] - 2018-08-10
+### Fixed
+- Now runs without deprecation warnings on julia 0.7 & 1.0
+### Changed
+- Minimum supported julia version is now 0.7
+
 ## [0.1.2] - 2018-08-01
 ### Fixed
 - `GDAL_DATA` is now set correctly for ArchGDAL