Leo 5.3-b1 released

[Edward K. Ream]

Leo <http://leoeditor.com/> 5.3-b1 is now available on SourceForge
<http://sourceforge.net/projects/leo/files/Leo/>. Leo is a PIM, an IDE and
an outliner.

*The highlights of Leo 5.3*

   - Leo now supports Jupyter Notebook (.ipynb) files.
   - @chapter is now allowed anywhere. No need for @chapters.
   - Faster spell checking.
   - The rst3 command supports @rst-table.
   - The show-invisibles command now uses native Qt characters.
   - Dozens of other improvements and bug fixes.

*Leo is*:

   - An outliner. Everything in Leo is an outline.
   - A Personal Information Manager.
   - A browser with a memory.
   - A powerful scripting environment.
   - A tool for studying other people's code.
   - A fully-featured IDE, with emacs-like commands.
   - Extensible via a simple plugin architecture.
   - A tool that plays well with IPython, vim and xemacs.
   - Written in 100% pure Python
   - Compatible with Python 2.6 and above or Python 3.0 and above.

*Leo's unique features*:

   - Always-present, persistent, outline structure.
   - Leo's underlying data is a Directed Acyclic Graph.
   - Clones create multiple views of an outline.
   - A simple, powerful, outline-oriented Python API.
   - Scripts and programs can be composed from outlines.
   - Importers convert flat text into outlines.
   - Scripts have full access to all of Leo's sources.
   - Commands that act on outline structure.
   Example: the rst3 command converts outlines to reStructuredText.
   - @test and @suite scripts create unit tests automatically.
   - @button scripts apply scripts to outline data.
   - Outline-oriented directives.

Simulating these features in vim or Emacs is possible, just as
it is possible to simulate Python in assembly language...

*Links*

   - Leo's home page <http://leoeditor.com>
   - Documentation <http://leoeditor.com/leo_toc.html>
   - Tutorials <http://leoeditor.com/tutorial.html>
   - Video tutorials <http://leoeditor.com/screencasts.html>
   - Forum <http://groups.google.com/group/leo-editor>
   - Download <http://sourceforge.net/projects/leo/files/>
   - Leo on Github <https://github.com/leo-editor/leo-editor>
   - What people are saying about Leo
   <http://leoeditor.com/testimonials.html>
   - A web page that displays .leo files
   <http://leoeditor.com/load-leo.html>
   - More links <http://leoeditor.com/leoLinks.html>

Edward
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Edward K. Ream: edreamleo at gmail.com Leo: http://leoeditor.com/
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