5.0.0 release

[nblumhardt]

• 51 - CancellationToken support

• 50, #52, #57 - Seq v5 API changes

• 49 - make range parameters fully optional in Data.QueryAsync()

• 55 (nonfunctional) - README updates

Breaking changes since 4.0:

• API key tokens can no longer be retrieved once an API key is created
• App instances no longer accept the obsolete SignalIds property; this has been replaced by the InputSignalExpression property
• Deletion results no longer carry a DeletedEventsCount property
• API keys no longer carry a CanActAsPrincipal property, and instead carry AssignedPermissions
• Signals and SQL queries no longer carry IsWatched and Show properties, workspaces now fulfill this role instead
• Users no longer carry IsAdministrator, instead use the RoleIds property

[nblumhardt]

We're publishing this ahead of the final Seq 5 server release, as the API is not expected to change, and we have some downstream packages such as seqcli whose final releases will depend upon a non-preview build of Seq.Api.

Please continue using a 4.xx version of this package with earlier servers.

Thanks! 🎉