Added FixedText and TitleFixedText widgets.
Added titled versions of the MultiLine and MultiSelect widgets (not
fully bug tested).
Small bugfix in the Form.edit() method.
There is a bug in the height=parameter that needs fixing. For now,
always create widgets using max_height=
error in line 175 of the multiline widget fixed - scroll_exit now
works without error.
error in Checkbox fixed (self.hide now defined in __init__)
Bug fixed. Widgets were using the useable_space method of
screen_areas to calcuate the space available to them. An error in
coding meant that his method was reporting the physical space in a
terminal, not the space in the Form area. A new method has been
introduced called widget_useable_space which reports the Form area
instead, or rather safe values (leaving 1 col and 1 row clear).
Bug in add_widget fixed - max_height default should be None, not False.