v2022.1.0

• Update API version (media type) to v9
• Add support for variables in searches and queries
• Add support for the System, Project, and Organization permissions
• Don't convert date-looking strings to DateTime when deserializing untyped JSON values - this prevents unpredictable behavior unpredictable when reading query results etc.
• Use decimal when deserializing numbers in untyped JSON data - this is more accurate because Seq's internal numeric representation is decimal
• Expose a text description of user roles
• Update the API for user search history tracking
• Expose Syntax on AppSettingPart
• Build with VS2022
• Some non-null reference type annotations
• Redesigned Events resource group
  • EnumerateAsync() provides a reliable, obvious, interface to searches, which transparently handles paging
  • ListAsync() wraps EnumerateAsync() and simplifies use for consumers without C#9 await foreach
  • PageAsync() provides low-level API access
  • DeleteAsync() does what is implied by its name
  • InSignalAsync() and DeleteInSignalAsync() removed, replaced with the methods above
• Adds net6.0 TFM