Notes

This pre-release now has an installer. However, it does not create the Start Menu shortcut. This still needs to be done manually.
I have only tested this on Windows 10. There were reported issues with Windows 7.
The patched client is now called ThereEdge.exe.

Cleanup

If you installed the 0.9.0 pre-release, you can uninstall Python 3.9 as it is no longer required.
You can also delete the following files from the ThereClient directory prior to installing to start fresh.
- BrowserProxy.dll
- FlashProxy.dll
- WebView2Loader.dll
- There-Patched.exe
- There-Patched.exe.WebView2 (directory)
- Patch.py

Download and unzip the archive to a temporary area.
Run setup.exe and follow the installation instructions. There will likely be complaints that this is unverified software.
Create a new There client shortcut.
- From the Start Menu, right click on the "Sign on to There" shortcut and select More > Open file location.
- Copy/paste the shortcut to create new one, give it a pretty name, then right click on it and select Properties.
- Modify the Target so it is using ThereEdge.exe instead of There.exe.

Once this is all done, you can run the There client without using Flash or Internet Explorer.
Please note that not all of the Flash controls have been ported for this pre-release. Specifically, the social game huds are not finished. As long as you don't uninstall Flash and Internet Explorer, you can continue to use the original There shortcut for these.