Release 2.12.0

• Merge pull request #191 from jetstreamapp/feat/186-1 (aa094e4)
• Merge pull request #200 from jetstreamapp/bug/198 (1bc7da1)
• Fix deploy metadata between orgs (b2a31d6)
• Fix tests (76b317a)
• Improve combobox selected label (d02b5bf)
• Fix/improve popover rendering for lazy combobox (355e542)
• Improve label for selected filter field (b751b56)
• Fix order by rendering (0fb3fcd)
• Fix keyboard navigation for virtual dropdowns (42a8972)
• Merge pull request #195 from jetstreamapp/chore/comted-fix (9d5b81e)
• Migrate orderby to virtual combobox (885955a)
• Improve filter dropdown (2504b4d)
• Fix cometd override (9644603)
• Move ListVirtual to parent (6674d01)
• fix list item renderer (7f6df6c)
• Fix import name (bb3671f)
• Merge pull request #192 from jetstreamapp/feat/186-virtual-poc (88c67b9)
• code cleanup (3e652c0)
• Add virtual scrolling to combobox (c3d9b91)
• WIP POC - Attempt to make combobox virtual (7480d1c)
• Handle relationships with text type (8d84808)