Update changelog. Bump version.

Author: brocaar

docs/config.toml

@@ -40,4 +40,4 @@ pygmentsUseClasses = true
     weight = 5
 
 [params]
-    version = "2.8.0"
+version = "3.0.0-test.1"

docs/content/overview/changelog.md

@@ -9,6 +9,34 @@ description: Lists the changes per LoRa Server release, including steps how to u
 ---
 # Changelog
 
+## v3.0.0
+
+### Features
+
+### Improvements
+
+#### Legacy code removed
+
+Legacy code related to older gateway structures have been removed. All gateway
+messages are now based on the [Protobuf](https://github.com/brocaar/loraserver/blob/master/api/gw/gw.proto)
+messages.
+
+#### MQTT topic refactor
+
+Previously, each topic was configured separatly. To be consistent with
+LoRa Gateway Bridge v3, this has been re-factored into "events" and "commands".
+
+### Upgrading
+
+LoRa Server v3 depends on LoRa Gateway Bridge v3! It is recommended to upgrade to
+the latest LoRa Server v2 release (which is forwards compatible with the
+LoRa Gateway Bridge v3), upgrade all LoRa Gateway Bridge installations to v3
+and then upgrade LoRa Server to v3.
+
+It is also recommended to update your LoRa Server configuration file.
+See [Configuration](https://www.loraserver.io/loraserver/install/config/) for
+more information.
+
 ## v2.8.0
 
 ### Features
@@ -55,6 +83,7 @@ with LoRa Gateway Bridge v2, but also provides compatibility with LoRa Gateway B
 Once LoRa Server v3 is released, it is recommended to first upgrade all LoRa
 Gateway Bridge instances to v3 and then upgrade LoRa Server to v3.
 
+
 ## v2.7.0
 
 ### Improvements