Changelog for Vestnik.

3.1.0-pl
==============
- All four grids (rules, templates, queue, log) rebuilt on Tabulator: remote pagination, remote sorting, page size selector
- Multiple row selection (Ctrl+click / Shift+click) and a row context menu with bulk delete
- "Delete all" for rules and templates; queue/log clearing moved to the tab toolbar
- Per-grid search box; log grid additionally filtered by status
- Manual queue run reports its stats (processed / sent / failed / to retry) in the toolbar
- Grids are created lazily on first tab display; forms are protected against double submit
- Refreshed manager UI theme: modal dialogs, forms, buttons, tabs, search fields and alerts (css/mgr/modal-theme.css)

3.0.1-pl
==============
- Email attachments: pass the reserved `attachments` key (list of file paths or {file, name} pairs) in trigger() $data or snippet &data
- New system setting vestnik_attachments_path restricts the directory attachments may be taken from (empty = site root)
- Queue email preview shows the list of attachments
- Docs tab: new "Attachments" section

3.0.0-pl
==============
- The first release
