v2.1.0

Features

• Add support for Document Item category in item data source. Credits to @sdahlbac for this contribution. {#171}
• Add support for getting file attachments of an item in item data source. Credits to @sdahlbac for this contribution. {#171}
• Add support for getting an API Credential item's credential value in item data source. Credits to @SMillerDev for this contribution. {#151}
• Add support for SSH Key Item category in item data source. Credits to @atammy-narmi for this contribution. {#158}

Fixes

• Set password to null if not set. {#173}
• Throw a better error message when item creation fails. {#174}
• Improve examples and documentation. {#174}