The XeSS Upscaler is back in the package. Releases 0.9.28 to 0.9.33 went out without it (no XESSUPSC folder and no libxess.dll; the download dropped from about 117 MB to about 57 MB). Intel's XeSS SDK was missing from the checkout the release is built in, the addon was not built, and the packaging script only printed a note. Nothing in the XeSS code changed; it is built again against the same pinned Intel SDK (3.0.2). If you installed 0.9.28 to 0.9.33 and use XeSS, install this one. 0.9.27 and earlier had it.
The packaging script now stops when an addon is not built, so this cannot go out unnoticed again.
Download LSAddonManager-0.9.34-x64.zip, unzip, run LSAddonManagerSetup.exe. SHA-256 of the zip: 310e725c5610fad0e99958a59c984eab7a153b06e710722146f15903aa1ee2da