Sphinx-needs

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* Bugfix: Dynamic function registration via API supports new internal function handling
(:issue:`147`)
* Bugfix: Deactivated linked gantt elements in :ref:`needgantt`, as PlantUML does not support them in its
latest version (not beta).

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* Improvement: Added :ref:`needsequence` directive. (:issue:`144`)
* Improvement: Added :ref:`needgantt` directive. (:issue:`146`)
* Improvement: Added two new need-options: :ref:`need_duration` and :ref:`need_completion`
* Improvement: Configuration option :ref:`needs_duration_option` and :ref:`needs_completion_option` added
* Bugfix: Using of `tags.has() <https://www.sphinx-doc.org/en/master/usage/configuration.html#conf-tags>`_ in
**conf.py** does not raise an exception any more. (:issue:`142`)
* Improvement: Clean up of internal configuration handling and avoiding needs_functions to get pickled by sphinx.

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* Improvement: Added options :ref:`need_pre_template` and :ref:`need_post_template` for needs. (:issue:`139`)
* Bugfix: Setting correct default value for :ref:`needs_statuses` (:issue:`136`)
* Bugfix: Dynamic functions can be used in links (text and url) now.

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* Improvement: Added ``transparent`` for transparent background to needflow configurations.
* Improvement: :ref:`needflow` uses directive argument as caption now.
* Improvement: Added option :ref:`needflow_align` to align needflow images.
* Improvement: Added option :ref:`needflow_scale` to scale needflow images. (:issue:`127`)
* Improvement: Added option :ref:`needflow_highlight` to :ref:`needflow`. (:issue:`128`)
* Improvement: :ref:`need_count` supports :ref:`ratio calculation <need_count_ratio>`. (:issue:`131`)
* Improvement: :ref:`needlist`, :ref:`needtable` and :ref:`needflow` support :ref:`filter_code`. (:issue:`132`)
* Improvement: :ref:`needflow` caption is a link to the original image file. (:issue:`129`)
* Bugfix: :ref:`need_template` can now be set via :ref:`needs_global_options`.
* Bugfix: Setting correct urls for needs in :ref:`needflow` charts.
* Bugfix: Setting correct image candidates (:issue:`134`)

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* Improvement: **Sphinx-Needs** configuration gets checked before build. (:issue:`118`)
* Improvement: ``meta_links_all`` :ref:`layout function <layout_functions>` now supports an exclude parameter
* Improvement: :ref:`needflow`'s :ref:`connection line and arrow type <needflow_style_start>` can be configured.
* Improvement: Configurations added for :ref:`needflow`. Use :ref:`needs_flow_configs` to define them and :ref:`needflow_config` for activation.
* Improvement: :ref:`needflow` option :ref:`needflow_debug` added, which prints the generated PlantUML code after the flowchart.
* Improvement: Supporting Need-Templates by providing need option :ref:`need_template` and
configuration option :ref:`needs_template_folder`. (:issue:`119`)
* Bugfix: :ref:`needs_global_options` handles None values correctly. ``style`` can now be set.
* Bugfix: :ref:`needs_title_from_content` takes ``\n`` and ``.`` as delimiter.
* Bugfix: Setting css-attribute ``white-space: normal`` for all need-tables, which is set badly in some sphinx-themes.
(Yes, I'm looking at you *ReadTheDocs theme*...)
* Bugfix: ``meta_all`` :ref:`layout function <layout_functions>` also outputs extra links and the `no_links`
parameter now works as expected
* Bugfix: Added need-type as css-class back on need. Css class name is ``needs_type_(need_type attribute)``.
(:issue:`124`)
* Bugfix: Need access inside list comprehensions in :ref:`filter_string` is now working.

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* Improvement: Added :ref:`needextract` directive to mirror existing needs for special outputs. (:issue:`66`)
* Improvement: Added new styles ``discreet`` and ``discreet_border``.
* Bugfix: Some minor css fixes for new layout system.