21/02/2020 done:
* send out new patcher
It took me a few days to get this patcher done.
It features:
* asynchronous patching -> the window is no longer frozen after clicking the update button
* it uses one server connection to fetch all changes -> so it's quicker
* there's a custom text displayed inside the patcher that's fetched directly from the server
* when there's a new patcher version, a popup window will ask you if you want to download it now. If you click yes, a browser window with a new link and install instructions will open
* there's some image in the patcher -> on every update it's downloaded from the server
* there's a progressbar that reflects the update progress
* the patcher no longer leaves temporary files around, it only stores the current game version in patcher/version
* a patch log is now saved in patcher/patch.log. It contains detailed information about all custom content on the server