Base64 #235

Merged r-takeuchi merged 3 commits into nitta-lab-2021:master from nitta-lab-2021:Base64 on 27 Oct 2021

2021-10-26	7fd2e93 Browse files » Merge branch 'master' into Base64 ... # Conflicts: # app/src/main/java/org/ntlab/acanthus_client/resources/gallery/StrokesRest.java h-fuji committed on 26 Oct 2021
	8904d46 Browse files » BASE64 g-akagi committed on 26 Oct 2021
	538edde Browse files » BASE64 g-akagi committed on 26 Oct 2021