Elisctl

- Add `schema list` command
- Fix `webhook change` command issue
- Remove `csv get` command
- Add example script for setting up a new organisation
- Enable assigning manager role to user
- Enable setting max token lifetime
- Catch ValueError when parsing schema in XLSX
- Fix Python3.8 support

- allow editing inbox attributes separately on `queue`-related commands
- add support for can_collapse in xlsx schema
- add sample usage of elisctl library in a Python code
- make `-q` option required on `user create`

* Add webhook command
* Allow creating and changing inbox properties on `queue change` command

* Improve documentation

* Add command `user_assignment` for bulk assignment of users to queues
* Change command `connector create`: `queue_id` parameter needs to be specified, if there is more than one queue in organization
* Support schema attribute `width` in XLSX schema format
* Fixed: booleans, in XLSX schema format, can be specified as boolean types
* Internal: filename can be specified in `ELISClient.upload_document`

* Enable passing custom filename with upload