Dtool-info

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Added
^^^^^

- Added ``dtool uuid`` command
- Added ``dtool item relpath`` command

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Added
^^^^^

- ``dtool item overlay`` command

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Fixed
^^^^^

- Fixed defect where ``dtool ls -q`` was listing dataset names rather than URIs
making it impossible to process datasets in a BASE_URI programatically

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Fixed
^^^^^

- Fixed the documentation of the ``dtool verify`` command

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Fixed
^^^^^

- Defect where inventory html template is not included in Python package on PyPi

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Added
^^^^^

- ``dtool inventory`` command for generating csv/tsv/html inventories of collections
of datasets

Fixed
^^^^^

- Fixed defect where running ``dtool item properties`` with an invalid identifier
resulted in a KeyError exception being propagated to the user
- Fixed defect where ``dtool verify`` did not compare file sizes