Yet another beta and BUG FIX release

Changelog

• going back to history will ask to save a modified playlist
• fixing #157 (python2 only)
• other minor changes

Packagers notice

Please refer to: https://github.com/coderholic/pyradio/blob/master/README.md#packaging-pyradio

Changed files

 Changelog                        |   8 +-
 README.html                      |   8 +-
 pyradio/__init__.py              |   2 +-
 pyradio/browser.py               |  24 ++---
 pyradio/config_window.py         |  32 +++----
 pyradio/edit.py                  |  32 +++++--
 pyradio/install.py               |   2 +-
 pyradio/radio.py                 | 199 +++++++++++++++++----------------------
 pyradio/simple_curses_widgets.py |   6 +-
 pyradio/themes.py                |  12 +--
 pyradio/window_stack.py          |  46 ++++-----
 11 files changed, 188 insertions(+), 183 deletions(-)