Bugfix Release 1.62

• Fix toggle_sidebar keybindings bug (#93)
• Removed default keybindings in favor of #84.
  The legacy keybindings for windows can be added to the default keybindings (Preferences -> Key Bindings) file if requried:

[
    { "keys": ["ctrl+alt+n"], "command": "text_pastry_show_command_line", "args": { "text": "" } },
    { "keys": ["ctrl+alt+t"], "command": "text_pastry_show_menu" },
    { "keys": ["ctrl+alt+v"], "command": "text_pastry_insert_text", "args": { "clipboard": true, "separator": "\\n" } },
    { "keys": ["ctrl+alt+b"], "command": "text_pastry_redo" },
    ...
]