copr-frontend

• catch OSError when srpm_storage is full
• drop the duplicate jquery-ui.min.js reference from html layout
• move to jQuery 3
• drop redundant dependency on python3-flask-cache
• more understandable permissions error messages
• allow users to upvote or downvote projects
• more understandable build state descriptions in web UI
• add new overview tab showing starting builds
• fix avatars for copr groups
• validate package name input
• more effective query of packages with their latest builds
• return user-friedly error message for non-admin exceptions
• admins can now create projects for others via API
• fix up libmodulemd dependency

copr-backend

• testsuite: give more time to the slow Koji builders
• prioritize all non-background jobs
• fix up libmodulemd dependency

copr-rpmbuild

• provide the "dynamic" %%buildtag
• define config_opts['root'] mock config for make srpm method