Log Message:
py-urwid: updated to 2.0.0

Urwid 2.0.0:
Full Python 2.x/3.x support
Proper handling & customization of OS signals by GLib event loop
vterm: Fix handling of NUL characters
Add 256-color support for fbterm
Italics support
Store envron's TERM value as a Screen attribute
Replaced hashbangs to use proper Python binary
Post-change signal for Edit, CheckBox and RadioButton widgets
ListBox.body update
SimpleListWalker is now default when setting ListBox.body
SelectEventLoop alarm improvements
Title align & borderless sides for LineBox
Support for 'home' and 'end' keys in ListBox
Various code cleanups
CI fixes
Example fixes
Documentation fixes
Code cleanup & typo fixes
Integration of tox for easier Python cross-version testing
Test fixes
Correct error messages in Decoration
Fix for StandardTextLayout.calculate_text_segments
Fix for raw display should release file descriptors
Fix issues with unicode characters in ProgressBar
Fix for 'page up' and 'page down' in ListBox when having focusable children
Fixes for examples compatibility with Python 3
Fix default screen size on raw display
Fix underlining for padded text
Fix for terminal widget crash with Python 3
Fix for string formatting error
Fix for iterator in WidgetContainerListContentsMixin
Fix for missing modified signal in SimpleFocusListWalker
Dropped Python 3.2 support
Test coverage is now collected