Update NEWS and documentation
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NEWS.rst
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NEWS.rst
@ -16,6 +16,12 @@ New Features
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* All augmented assignment operators (except `%=` and `^=`) now allow
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more than two arguments.
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Other Breaking Changes
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------------------------------
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* ``HySequence`` is now a subclass of ``tuple`` instead of ``list``.
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Thus, a ``HyList`` will never be equal to a ``list``, and you can't
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use ``.append``, ``.pop``, etc. on an expression or list.
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Bug Fixes
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------------------------------
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* Statements in the second argument of `assert` are now executed.
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@ -60,6 +60,10 @@ Adding a HySequence to another iterable object reuses the class of the
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left-hand-side object, a useful behavior when you want to concatenate Hy
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objects in a macro, for instance.
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HySequences are (mostly) immutable: you can't add, modify, or remove
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elements. You can still append to a variable containing a HySequence with
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``+=`` and otherwise construct new HySequences out of old ones.
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.. _hylist:
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@ -90,11 +94,6 @@ HyDict
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``hy.models.HyDict`` inherits :ref:`HySequence` for curly-bracketed
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``{}`` expressions, which compile down to a Python dictionary literal.
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The decision of using a list instead of a dict as the base class for
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``HyDict`` allows easier manipulation of dicts in macros, with the added
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benefit of allowing compound expressions as dict keys (as, for instance,
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the :ref:`HyExpression` Python class isn't hashable).
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Atomic Models
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-------------
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