ANN: Abjad 2.19

[josiah oberholtzer]

I'm pleased to announce that Abjad 2.19 is now available.

    Abjad is a Python API for Formalized Score Control

    Abjad helps composers build up complex pieces of music notation in an
    iterative and incremental way. Use Abjad to create symbolic
    representations of all the notes, rests, staves, tuplets, beams and
slurs
    in any score. Because Abjad extends the Python programming language, you
    can use Abjad to make systematic changes to your music as you work. And
    because Abjad wraps the powerful LilyPond music notation package, you
can
    use Abjad to control the typographic details of the symbols on the page.

- Docs: http://abjad.mbrsi.org/
- GitHub: https://github.com/abjad/abjad
- PyPI: https://pypi.python.org/pypi/Abjad/2.1
<https://pypi.python.org/pypi/Abjad/2.17>9

Details of the new release appear below.

------------

## Improvements

- [#740] Proofread ‘For beginners’ section of docs. Thanks @delucis!
- [#741] LilyPond's log is displayed on LilyPond compilation error.
- [#749] Added `LilyPondCommand` to Abjad's global namespace.
- [#752] Taught `detach()` about different types of grace container.
- [#753] Taught `Dynamics` about _sforzando_ dynamic names.
- [#744] Refactoring and cleanup in `schemetools`. Thanks @ajyoon!
- [#745] Reimplemented Abjad's repr, storage format and object templating
system.
- [#755, #760, #761, #763] Cleaned-up class member ordering via a new
command-line script. Thanks @ajyoon!
- [#766] Abjad's `ajv` looks for `.ajv` config files in $HOME, the current
directory and any parent directory thereof. A [doctest] section can specify
imports to be run at the beginning of each doctest in `ajv doctest` via an
`imports` key.

## Changes

- [#745] `AbjadObject`'s `_storage_format_specification` and
`_repr_specification` properties are deprecated in favor of a new unified
`_get_format_specification()` method. The old properties will no longer be
supported in the next Abjad release: 2.20.

## Bugfixes

- [#762] Improved interaction between chords and ties. Thanks
@quesebifurcan!
- [#764] `IOManager.open_file()` respects Abjad's config when opening MIDI
files. Thanks @quesebifurcan!
- [#767] Fixed edge-cases in Graphviz attribute-handling and append/extend
behavior.
- [#774] NamedPitch.invert() guards against errors from multiply-augmented
or diminished intervals.

------------

Special thanks to 2.19 contributors @delucis (Chris Swithinbank),
@ajyoon (Andrew
Yoon) and @quesebifurcan (Fredrik Wallberg) on Github, and to Jeffrey
Treviño for his constant and patient organization.

------------

For installation instructions, see http://abjad.mbrsi.org/installation.html.

We hope you enjoy!

Trevor Bača
* mail: trevorbaca at gmail.com
* home: http://www.trevorbaca.com/

Josiah Wolf Oberholtzer
* mail: josiah.oberholtzer at gmail.com
* home: http://josiahwolfoberholtzer.com