* Items are now objects that can be retrieved and manipulated.
* clip rect is used for left and right panes
* initial support for items to do their own custom drawing by also
doing a clip rect for them
* a custom background color can be specified for the item.
* a command or function can be executed on item click.
* Introduced functionality to easily hide or show all or specific items.
* Better handling of deprecated get_items()
* Spacing is automatically added to items and cleaned on deprecated
items.
* Default items where separated and given the names:
doc:file, doc:position, doc:indentation, doc:lines,
doc:line-ending, core.commandview.
* Some default right or left click actions where given to the default
items.
* Started adding required bits to support dragging to left and right
panes when some items aren't visible.
Note: should work well enough already but maybe some repetitive stuff can be
cleaned out.
* Support for predicates by introducing add_item().
* Support for performing click actions on items.
* Support for optional tooltips on item hover.
* Deprecate the usage of get_item().
It make sense to not put the initial '/' in the filename as the name
is relative to the top directory it belongs to.
By removing the the initial '/' in the filename we can re-introduce the
variable
core.project_files
to stay compatible with standard Lite. The project_files variable will
always point to the files table of the first entry of
core.project_directories.