Sevenbridges-python

- Improvements:
- [Issue 112](https://github.com/sbg/sevenbridges-python/issues/112)
- Limit the url length for all requests with a 414 URI too long error
- [Issue 110](https://github.com/sbg/sevenbridges-python/issues/110)
- Added a simple wait method to tasks
- Bugfixes:
- [Issue 111](https://github.com/sbg/sevenbridges-python/issues/111)
- Added a check to make sure only one of project, parent or dataset are provided when querying files

- Bugfixes:
- Added handling for JSONDecodeError in sevenbridges-python's error decorator
- Remove the possibility of an unnecessary lazy fetch when creating tasks by removing the name parameter from inputs

- Improvements:
- Added support for creating Aliyun oss volumes

- Improvements:
- Updated default value for interruptible instances parameter to None when creating and running tasks

- Improvements:
- Fix readme rendering on PyPi

- Improvements:
- Added parent and preserve_folder_structure parameters and properties to imports
- Updated documentation regarding cwl