frictionless 0.10.0

• add_resource() now supports adding CSV file(s) directly as a resource. This skips reading/handling by R and gives users control over path (#74).
• CSV files in a remotely read package (like example_package) are now downloaded when writing with write_package(), rather than being skipped. This is more consistent with locally read packages. The behaviour for resources with a path containing URLs (only) and resources with data remains the same (no files are written). The write behaviour is better explained in the documentation (#77).
• write_package() now silently returns the output rather than input package.
• create_package() will set "profile" = "tabular-data-package" since packages created by frictionless meet those requirements (#81).
• create_schema() interprets empty columns as string not boolean (#79).
• read_package() can now read from a datapackage.yaml file.
• read_resource() now accepts YAML Table Schemas and CSV dialects.
• add_resource()/create_schema()'s df parameter is renamed to data.
• example_package's observations resource now has URLs as path to serve as an example for that.