v0.0.4-niki1

Forgot to put the "public" modifiers on TWindow.restore() / maximize()...

v0.0.4-niki0

Some changes I wish to use upon the original 0.0.4.
Hopefully they will be merged back upstream.

Changes:

• Change the wrapping method of TText to actually wrap before the end of the available space (and not after) -- also remove the now useless horizontal scroller on the widget
• TWindow.UNCLOSABLE windows: https://github.com/klamonte/jexer/issues/8
• Fix Z-Order handling on mouseUp/Down for widgets: https://github.com/klamonte/jexer/issues/7

Related pull requests in order: https://github.com/klamonte/jexer/pull/10, https://github.com/klamonte/jexer/pull/11, https://github.com/klamonte/jexer/pull/12