Added
- README directs users who want to do large scale creation or updating of catalogs to the [PySTAC](https://github.com/azavea/pystac) library instead
- ItemCollections.asset_defnition function for printing info on assets
Changed
- Default STAC_VERSION changed to 1.0.0-beta.1
- Item.get_filename replaced with Item.get_path which takes in single template string rather than separate `path` and `filename` arguments
- Collection.add_item() function input keywords changed `filename_template`
Fixed
- Substitution of templates on Windows: [issue](https://github.com/sat-utils/sat-stac/issues/51)
Removed
- Item.get_filename removed in favor of Item.get_path
- Storing search information in an ItemCollections file (and associated functions)