* feat: Add VV editor for tuples
* refactor: make tuple editor work in more cases
* feat: support other arity tuples
* fix: correct release notes entry
* refactor: use a new index selector for tuples
Also yank out silly unused code.
* fix: make all non-ValueTuples readonly
* refactor: spell out ValueTuple arities
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* feat: now view-variable controls can be registered from content, or even dynamically added
* refactor: whitespaces and xml-doc
* refactor: added changelog entry
* refactor: added methods for adding condition at start and at the end
* refactor: merged start/end methods, for IViewVariableControlFactory, improved changelog message
* refactor: replaced bool insertLast with InsertPosition enum
* refactor: reverse order of checks registration in ViewVariableControlFactory c-tor
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Co-authored-by: pa.pecherskij <pa.pecherskij@interfax.ru>
