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+ Added 'sitetreedump' and 'sitetreeload' management commands (fixes 36).
+ Added tests runner 'runtests.py'. Unit tests are now self-contained (see 42).
+ Now 'sitetree_menu' tag accepts any string as target branch alias. Related to dashed strings (see 38).
+ Now 'has_children' tree item attribute stands for visible children (see 38).
+ Now global template context is passed down all sitetree-related templates (see 39, see 40).
* Fixed template tags params clashes with context variables (see 42).