⬆️ Update htmltools to v0.6.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
htmltools	==0.5.1 -> ==0.6.0

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Release Notes

rstudio/py-htmltools (htmltools)

v0.6.0

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Breaking changes

• HTML no longer inherits from str. It now inherits from collections.UserString. This was done to avoid confusion between str and HTML objects. (#​86)

• TagList no longer inherits from list. It now inherits from collections.UserList. This was done to avoid confusion between list and TagList objects. (#​97)

• Tag and TagList's method .get_html_string() now both return str instead of HTML. (#​86)

• Strings added to HTML objects, now return HTML objects. E.g. HTML_value + str_value and str_value + HTML_value both return HTML objects. To maintain a str result, call str() on your HTML objects before adding them to other strings values. (#​86)

• Items added to TagList objects, now return TagList objects. E.g. TagList_value + arr_value and arr_value + TagList_value both return new TagList objects. To maintain a list result, call list() on your TagList objects before combining them to other list objects. (#​97)

New features

• Exported ReprHtml protocol class. If an object has a _repr_html_ method, then it is of instance ReprHtml. (#​86)

• Exported is_tag_node() and is_tag_child() functions that utilize typing.TypeIs to narrow TagNode and TagChild type variables, respectively. (#​86)

• Exported consolidate_attrs(*args, **kwargs) function. This function will combine the TagAttrs (supplied in *args) with TagAttrValues (supplied in **kwargs) into a single TagAttrs object. In addition, it will also return all *args that are not dictionary as a list of unaltered TagChild objects. (#​86)

• The Tag method .add_style(style=) added support for HTML objects in addition to str values. (#​86)

Bug fixes

• Fixed an issue with HTMLTextDocument() returning extracted HTMLDependency()s in a non-determistic order. (#​95)

v0.5.3

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• HTML tags in docstrings are now escaped. (#​90)

v0.5.2

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• The HTMLDependency.copy() method can now correctly copy folders in depenendencies that both include directories and have all_files=True. (#​87)

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