Bug Fix: Update security dashboard and admin notices styling to be compatible with WordPress 5.4.
Bug Fix: Periodically clear expired opaque tokens.
Bug Fix: Exclude "Process Update" and "Process Stop" logs when other process logs are hidden.
Bug Fix: Exclude process logs from the Malware Scan card.
Tweak: Use dashicons instead of font-awesome, and native font stack instead of Open Sans on the Grade Report.