Seasonal artwork credits

Twemoji graphics by Twitter, Inc. and other contributors.
Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0).
License: https://creativecommons.org/licenses/by/4.0/
Full license text: seasonal-artwork-license.txt (in this directory)
Project: https://github.com/twitter/twemoji
Source release: v14.0.2

The SVG artwork is redistributed unchanged. Kittyposting adds CSS motion,
scaling, rotation and opacity when displaying it as background decoration.
No endorsement by the artists or Twitter is implied.

Original files:
images/seasonal-snowflake.svg: https://raw.githubusercontent.com/twitter/twemoji/v14.0.2/assets/svg/2744.svg
images/seasonal-leaves.svg: https://raw.githubusercontent.com/twitter/twemoji/v14.0.2/assets/svg/1f342.svg
images/seasonal-maple-leaf.svg: https://raw.githubusercontent.com/twitter/twemoji/v14.0.2/assets/svg/1f341.svg
images/seasonal-blossom.svg: https://raw.githubusercontent.com/twitter/twemoji/v14.0.2/assets/svg/1f338.svg
images/seasonal-sun.svg: https://raw.githubusercontent.com/twitter/twemoji/v14.0.2/assets/svg/2600.svg