New Features

Added support for .yaml/.yml config files.
Configuration -c option now expects a folder with a config file and tasks.
File secrets backend will default to ${config_folder}/secrets as basePath instead of fail.
Implemented actions and tasks.
Backups will have a backup manifest with information about what has been run and what files/folders have been generated from each task - useful for a future restoring functionality.
Added config validations using json schema.
When uploading to cloud storage, compress and/or encrypt steps are done using actions implementation (avoiding duplicated code).
Implemented unactions system for the future restore mode
Uploading backups will now keep some folder structure and will only archive folders that were result of a task. This will simplify restore operations in any sense :)
Added tests :)

Cool bits

Improvements and bug fixes on S3 and B2 upload, including random KeyError exceptions.
Fixed issues when uploading files to S3/B2 that will contain duplicated prefix keys or rogue / characters.
Fixed crash when using python 3.6 (we want to make it fully compatible with that version).

Configuration switch -c expects folder not a config file.
Backup logic is now done using actions and tasks which are defined using yaml files inside ${config_folder}/tasks.
compression, encrypt and storages are now inside a cloud parent element.
storages is called now providers.
ftp and ftps providers now have port setting.
sftp changed the setting from disableHostKeys to enableHostKeys.
Rework commands: they are now friendlier and accept different arguments depending on the command (check out documentation for more)