Add command and key for rebuilding the tree

Altered items:
simple-call-tree-mode, simple-call-tree-buffers,
simple-call-tree-display-buffer, simple-call-tree-build-tree
Update version
Add new sorting method: sort by face name

Altered items:
simple-call-tree-default-sort-method, simple-call-tree-mode,
simple-call-tree-build-tree, simple-call-tree-sort-by-face,
simple-call-tree-store-state
Add options and functions for exporting org tree

Altered items:
simple-call-tree-org-link-style, simple-call-tree-export-org-tree,
simple-call-tree-list-callees-recursively,
simple-call-tree-insert-item, simple-call-tree-insert-org-header
New option: simple-call-tree-org-todo-state

Altered items:
simple-call-tree-org-todo-state, simple-call-tree-insert-org-header
Remove args from simple-call-tree-export-org-tree

Dont really need them.

Altered items:
simple-call-tree-export-org-tree
New command: simple-call-tree-apply-command

Rewrite other commands to utilize simple-call-tree-apply-command.
Add new keybinding and menu item.

Altered items:
simple-call-tree-mode, simple-call-tree-apply-command,
simple-call-tree-query-replace, simple-call-tree-query-replace-regexp,
simple-call-tree-bookmark, simple-call-tree-eval-defun, not
Update documentation
Update documentation
Update documentation and add menu item for export

Altered items:
simple-call-tree-mode
Add new sort command: sort by number of children

Altered items:
simple-call-tree-default-sort-method, simple-call-tree-mode,
simple-call-tree-build-tree, simple-call-tree-sort-by-num-children,
simple-call-tree-sort-alphabetically
New command: simple-call-tree-reverse

Also add keybinding and menu item

Altered items:
simple-call-tree-mode, simple-call-tree-reverse,
simple-call-tree-sort-by-num-children