Merge branch 'hotfix/changelog' into next

CHANGELOG.md

@@ -6,6 +6,7 @@ The main focus of this release is Kong's new CLI. With a simpler configuration f
 
 ### Changed
 
+- :warning: PostgreSQL is the new default datastore for Kong. If you were using Cassandra and you are upgrading, you need to explicitly set `cassandra` as your `database`.
 - :warning: New CLI, with new commands and refined arguments. This new CLI uses the `resty-cli` interpreter (see [lua-resty-cli](https://github.com/openresty/resty-cli)) instead of LuaJIT. As a result, the `resty` executable must be available in your `$PATH` (resty-cli is shipped in the OpenResty bundle) as well as the `bin/kong` executable. Kong does not rely on Luarocks installing the `bin/kong` executable anymore. This change of behavior is taken care of if you are using one of the official Kong packages.
 - :warning: Kong uses a new configuration file, with an easier syntax than the previous YAML file.
 - New arguments for the CLI, such as verbose, debug and tracing flags. We also avoid requiring the configuration file as an argument to each command as per the previous CLI.

UPGRADE.md

@@ -24,6 +24,8 @@ $ kong reload [-c configuration_file]
 
 ## Upgrade to `0.9.x`
 
+PostgreSQL is the new default datastore for Kong. If you were using Cassandra and you are upgrading, you must explicitly set `cassandra` as your `database`.
+
 This release introduces a new CLI, which uses the [lua-resty-cli](https://github.com/openresty/resty-cli) interpreter. As such, the `resty` executable (shipped in the OpenResty bundle) must be available in your `$PATH`.
 Additionally, the `bin/kong` executable is not installed through Luarocks anymore, and must be placed in your `$PATH` as well.
 This change of behavior is taken care of if you are using one of the official Kong packages.