v1.5.12-beta (updated continuously)

FIX: Remove dependency on remote module (should make it more future-proof and avoid some crashes)
FIX: Rare crash when the language/locale isn't set properly
FIX: Video urls did not open properly #1238 #1231 #1192
FIX: Contact names showed as Unknown #1306
FIX: Starting new conversation caused crash #1303
FIX: The placeholder message in a new conversation wouldn't disappear, causing a duplicate message to appear
FIX: New conversations wouldn't show in the conversations list
FIX: Random Rejected (update:entity) outside action error in sendsetpresence #1301
NEW: Allow using custom themes (place custom.css from resources in ~/.config/yakyak/colorscheme/, ~/Library/Application Support/yakyak/colorscheme/ or %AppData%\yakyak\colorscheme) #1334
NEW: Last active timestamp #733
FIX: Attachments from Google Chat would only show up as links, add workaround to make them appear inline again
FIX: Attachments would sometimes not show
FIX: Issue with unread status not being updated properly
FIX: Yakyak would not start when using glibc 2.34
FIX: Selected conversation would not be saved properly
FIX: Typo caused Pop theme to not work

Includes fixes from all v1.5.11 point releases, including:
FIX: YakYak failed to load with 'fetchPvt failed' due to google changing things on the server-side. (from v1.5.11.1)
FIX: YakYak failed to load when upgrading from an older version (thanks to @boekabart for diagnosis). (from v1.5.11.2)
FIX: YakYak failed to load with "Cannot read property 'length' of undefined" when the account had no active conversations (thanks to @AsgrimS for logs) (from v1.5.11.3)
FIX: Fix tray icon click not causing the window to show or hide properly (thanks to @skanadian for additional details). (from v1.5.11.4)
FIX: Sign in failed because private token was not fetched properly (from v1.5.11.5)