docs: Update changelog

Author: Clashsoft

docs/Changelog.md

@@ -143,19 +143,25 @@
 ## BREAKING CHANGES
 * Game ticks are no longer scheduled and must be trigger via `PATCH /games/:game?tick=true`.
 * Changed the `empire.pop.credits.unemployed` variable to `empire.pop.unemployed_upkeep.credits`.
+* Adding buildings and districts, upgrading systems, and researching technologies are no longer possible via direct updates to the Empire or System. A Job must be started instead.
 
 ## New Features
-* Custom effects with `base` values can now create new variables, in the following contexts:
++ Custom effects with `base` values can now create new variables, in the following contexts:
   * Building and district cost, upkeep and production.
-  * System upgrade upkeep.
+  * System upgrade cost and upkeep.
   * System type district chances.
   * Pop consumption.
   * Unemployed pop costs.
++ Added Jobs for the following actions:
+  * Adding buildings and districts.
+  * Upgrading systems.
+  * Researching technologies.
 
 ## Improvements
 * Game speed can be any positive number number.
   It must be interpreted by the client to trigger manual ticks.
 * The `PATCH /games/:game` request that starts a game now waits until the game is properly initialized before responding.
+* Exploring a system (via a Job) no longer makes the empire the owner of the system.
 
 ## Bugfixes
 * Fixed some situations where systems may not be connected to the rest of the map.