v0.3.0-beta.1

[0.3.0-beta.1] - 2021-09-22

Added

• Jupyter Notebook tutorials
• Basic CQL-JSON filtering #100

Changed

• Improved performance when constructing pystac.ItemCollection objects.
• Relax requests dependency #87
• Use regular expressions for checking conformance classes #97
• Reorganized documentation, updated all docs

Fixed

• ItemSearch now correctly handles times without a timezone specifier #92
• queries including gsd cast to string to float when using shortcut query syntax (i.e., "key=val" strings). #98