adds FluxErase (POST flux-tools/erase-v1) and FluxOutpaint
(POST flux-tools/outpainting-v1) in a new nodes/flux_tools.py
module. these wrap the two new BFL tool endpoints from May 2026.
also:
- ImageToBase64_BFL gains an image_format dropdown (jpeg / png) so
masks can be encoded losslessly
- BaseFlux.generate_image moves check_multiple_of_32 inside the
try/except so non-multiple-of-32 dims return a blank image
instead of crashing the workflow
- bump version to 1.1.0; start CHANGELOG.md fresh at 1.1.0