update changelog

CHANGELOG.md

@@ -1,4 +1,8 @@
 ## dbt next (release TBD)
+
+### Breaking changes
+- Added a new dbt_project.yml version format. This emits a deprecation warning currently, but support for the existing version will be removed in a future dbt version ([#2300](https://github.com/fishtown-analytics/dbt/issues/2300), [#2312](https://github.com/fishtown-analytics/dbt/pull/2312))
+
 ### Features
 - Added --fail-fast argument for dbt run and dbt test to fail on first test failure or runtime error. ([#1649](https://github.com/fishtown-analytics/dbt/issues/1649), [#2224](https://github.com/fishtown-analytics/dbt/pull/2224))
 - Support for appending query comments to SQL queries. ([#2138](https://github.com/fishtown-analytics/dbt/issues/2138), [#2199](https://github.com/fishtown-analytics/dbt/pull/2199))
@@ -10,6 +14,9 @@
 - dbt now builds the relation cache for "dbt compile" and "dbt ls" as well as "dbt run" ([#1705](https://github.com/fishtown-analytics/dbt/issues/1705), [#2319](https://github.com/fishtown-analytics/dbt/pull/2319))
 - Snowflake now uses "show terse objects" to build the relations cache instead of selecting from the information schema ([#2174](https://github.com/fishtown-analytics/dbt/issues/2174), [#2322](https://github.com/fishtown-analytics/dbt/pull/2322))
 - Snowflake now uses "describe table" to get the columns in a relation ([#2260](https://github.com/fishtown-analytics/dbt/issues/2260), [#2324](https://github.com/fishtown-analytics/dbt/pull/2324))
+- Sources (and therefore freshness tests) can be enabled and disabled via dbt_project.yml ([#2283](https://github.com/fishtown-analytics/dbt/issues/2283), [#2312](https://github.com/fishtown-analytics/dbt/pull/2312), [#2357](https://github.com/fishtown-analytics/dbt/pull/2357))
+- schema.yml files are now fully rendered in a context that is aware of vars declared in from dbt_project.yml files ([#2269](https://github.com/fishtown-analytics/dbt/issues/2269), [#2357](https://github.com/fishtown-analytics/dbt/pull/2357))
+- Sources from dependencies can be overridden in schema.yml files ([#2287](https://github.com/fishtown-analytics/dbt/issues/2287), [#2357](https://github.com/fishtown-analytics/dbt/pull/2357))
 
 ### Fixes
 - When a jinja value is undefined, give a helpful error instead of failing with cryptic "cannot pickle ParserMacroCapture" errors ([#2110](https://github.com/fishtown-analytics/dbt/issues/2110), [#2184](https://github.com/fishtown-analytics/dbt/pull/2184))