Merge pull request #473 from great-expectations/release/v0.6.0

Update version and roadmap for release

docs/source/roadmap_changelog.rst

@@ -11,15 +11,19 @@ Planned Features
 
 
 v.0.6.0__develop
-----------------
-* Add support for SparkDFDataset (thanks @cselig)
+________________
+
+
+v.0.6.0
+------------
+* Add support for SparkDFDataset and caching (HUGE work from @cselig)
 * Migrate distributional expectations to new testing framework
 * Add support for two new expectations: expect_column_distinct_values_to_contain_set 
   and expect_column_distinct_values_to_equal_set (thanks @RoyalTS)
-BREAKING CHANGES:
-* Add caching mechanism for Datasets; \
-  when enabled, GE assumes that dataset does not change between evaluation of individual expectations
-* Drop official support for python 2 and pandas < 0.22
+* FUTURE BREAKING CHANGE: The new cache mechanism for Datasets, \
+  when enabled, causes GE to assume that dataset does not change between evaluation of individual expectations. \
+  We anticipate this will become the future default behavior.
+* BREAKING CHANGE: Drop official support for python 2 and pandas < 0.22
 
 
 v.0.5.1