Release 826

tag-826

update apk

Release 822

tag-822

fix uploading image

Release 821

tag-821

fix read file issue in android 10

Release 820

tag-820

update apk

Release 818

tag-818

optimize login webpage

Release 817

tag-817

update apk

Release 816

tag-816

update version convention

Release 814

tag-814

update apk

Release 813

tag-813

Merge branch 'openmartin-master'

Release 806

tag-806

update apk