Seatsio

Removed reports `by_selectability` in favour of `by_availability`.

We now throw a `RateLimitExceededException` instead of a generic `SeatsioException`.

Replaced `events.retrieve_object_status` by `events.retrieve_object_info`.
Added `events.retrieve_object_infos`.
Renamed `EventReportItem` to `EventObjectInfo`.
Renamed `ChartReportItem` to `ChartObjectInfo`.

Made max number of retries configurable

Renamed `workspaceKey` parameter of `seatsio.Client` to `workspace_key`.

So:

python
client = seatsio.Client(seatsio.Region.EU(), secret_key="my-company-admin-key", workspaceKey="my-workspace-public-key")


Becomes

python
client = seatsio.Client(seatsio.Region.EU(), secret_key="my-company-admin-key", workspace_key="my-workspace-public-key")

Added ids property on reports