v0.34

This release adds support for alertmanager 0.17.x (note that 0.16.x is not supported).
There are new options for customizing the UI:

• title bar background can follow the color of alerts state (red for active, green for suppressed, gray for unprocessed) if all alerts in given group share the same state
• grid size can be controlled by setting custom minimal width for alert groups, smaller width means more groups can be packed in a single row

New config option was added to blacklist selected labels from being used when populating silence form from alert or alert group.
There was a batch of css fixes and tweaks.

Full changelog:

• #672 chore(backend): rename mapper to match alertmanager version
• #671 fix(ui): cleanup css classes for labels
• #666 fix(ui): bump the font size for filters
• #665 fix(ui): fix styling of the close icon on filter input button
• #661 refactor(ui): use button instead of a badge for filter elements
• #663 chore(demo): don't use severity or region in the silence form
• #662 feat(ui): add options for ignoring labels when populating silences from alerts
• #659 fix(ui): lower repack debounce
• #657 fix(ui): debounce grid updates so that they are batched
• #656 fix(ui): re-add fetch polyfill for older browsers
• #655 fix(ui): add missing margin to filter input label with no counter
• #654 chore(deps): upgrade go-openapi to v0.19.0
• #649 fix(ui): provide empty css file to import instead of Google fonts
• #646 refactor(ui): use react-app-polyfill instead of @babel/polyfill
• #644 feat: support alertmanager >=0.17.0
• #645 chore(ui): upgrade all 3rd party dependencies
• #640 fix(ui): limit annotation width to the parent width
• #638 fix(ui): correctly set card background color
• #636 feat(ui): add colored second display style for titlebar
• #632 chore(ci): use Go 1.12.4 on Travis
• #629 fix(ui): ensure that all filter bar label indicators use badge class
• #624 feat(ui): allow configuring grid size