Highlights

var loops (#2077)
- i.e. var foo = [for i in range(0,10): 'value${i}']
Add type descriptions to completions and hovers, support method hovers. (#1915)
Initial support for resource snippets for specific resource types
- Eventually this will be at parity with the snippets in ARM Tools
Add support for name discriminators on resource types (#1950)
- allows us to properly validate resources like microsoft.keyVault/vaults/accessPolicies and microsoft.web/sites/config
Add textmate grammar (#2069)
- this will power syntax highlighting in GitHub and Azure DevOps very soon
msbuild task and cli nugets (#1992)
- this is to support converting our internal ARM Template usage to Bicep, but is available externally as well (docs available with #2191)

Features and bug fixes

Bicep team:

Bump types package (#2200)
Fix for issue 1985 (#1989)
Flow dependsOn detection through 'existing' resource definitions (#1991)
Fix bad string escaping in ARM template generation (#2006)
Correct providers() return type (again...) (#2018)
Added return types to signature help (#2089)
no property value completions before the colon (#2121)
Implement special handling for allowed array values (#2169)
Update top level param with option to use @secure syntax (#2019)
Update deprecated snippet for parameter types- secureObject, secureString (#2038)
Update deprecated param snippet and move snippets to template files (#2130)