Update instructions

DEVELOPMENT.md

@@ -2,7 +2,7 @@
 
 ## Requirements
 - Gradle
-- Java SDK, version 8.x (IntelliJ is currently incompatible with JDK 9.x). You have to use JDK version 8.x, otherwise the gradle build will fail.
+- Java SDK, version 11 or later
 
 ## Build the plugin
 The build can be started with
@@ -28,8 +28,8 @@ will be active after the restart of your IDE.
 Official instructions how to deploy a plugin: https://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/publishing_plugin.html
 
 ### Steps to publish / update
-- Update the plugin's version, if necessary. You can do this by modifying the value for `version = '...'` in the file `build.gradle`.
-- Run the gradle build
+- Update the plugin's version, if necessary. You can do this by modifying the value for `version = '...'` in the file `gradle.properties`.
+- Run the gradle build: `./gradlew clean build runPluginVerifier`.
 - If there were no errors during the build, then the file to upload is `./build/distributions/zato-$version.zip`
 - Login at https://plugins.jetbrains.com and click on *Upload plugin* if you'd like to upload it for the first time. If you'd like to update an existing plugin, then open the plugin's page and click on *Update Plugin*.
 - Select the file listed above in the upload control, add change notes if necessary. The plugin's category is probably *Networking*, but choose any other category at your preference. Also, fill out the other fields, like `License` etc.
@@ -41,9 +41,9 @@ This is only necessary if you'd like to work on the plugin's source code.
 It's not required to build it.
 
 ### Setup IntelliJ
-- Download the current version of IntelliJ Community Edition 2016.3.x, Version 2019.3 was used for development
+- Download the current version of IntelliJ IDEA Community or Ultimate.
     - List of older releases: https://www.jetbrains.com/idea/download/previous.html
-- Open the project directory as a project, it's using the build.gradle file 
+- Open the project directory as a project, it's using the `build.gradle.kts` file 
   to synchronize the IntelliJ SDK and the Python plugin 
 
 ### Directory structure

README.md

@@ -8,18 +8,16 @@ but the synchronisation feature is disabled in this case.
 
 ### Versions
 
-Versions **2020.1 and later** are supported by this branch.
-
-Branch **idea-2016+** supports versions 2016.1 to 2019.3.
+Versions **2022.1 and later** are supported by this branch.
 
 ### IDEs
 
 Supported are:
 
 - PyCharm Professional
 - PyCharm Community
-- IntelliJ Community with the Python plugin installed
-- IntelliJ Ultimate with the Python plugin installed
+- IntelliJ IDEA Community with the Python plugin installed
+- IntelliJ IDEA Ultimate with the Python plugin installed
 
 ## Passwords
 The passwords of your configured Zato servers are stored in your IDE's [password safe](https://www.jetbrains.com/help/idea/reference-ide-settings-password-safe.html). If you configured the password safe to not store passwords, then you will be prompted for a password the first time a file is uploaded to the configured default Zato server.