Hopeit.engine

______________
- Engine:

- Support for MockFile.read() on apps testing hooks

- Plugins:

- dataframes (beta):

- Fix: construction from series compatible with pandas

- Fix: clean index name on new dataframe creation

______________
- Plugin:

- dataframes (beta): fixed package imports

______________
- Plugin:

- dataframes (beta): new plugin to support workflows based on `pandas`

______________
- Plugin:

- fs-storage: add `store_file`, `get_file`, `delete_files` and `list_files` methods

______________
- Engine:

- SETUP: new EventType, runs before initializing endpoints, streams, and services

______________
- Plugin:

- fs-storage: Resolved compatibility issues with long file names on Windows