progress: make determinate bar more like wget progress bar
foo [ ] 0/58
foo [> ] 1/58
foo [=> ] 2/58
...
foo [=======================================================> ] 56/58
foo [========================================================> ] 57/58
foo [=========================================================>] 58/58
The bar now has a '>' character at the end. This indicates the direction,
is consistent with the indeterminate '<=>' bar, and looks much nicer.
http://example.com/no/anchor, branches: []
http://example.com/an/anchor, branches: ['foo']
http://example.com/no/anchor/branches, branches: ['foo']
http://example.com/an/anchor/branches, branches: ['foo', 'bar']
http://example.com/an/anchor/branches-None, branches: ['foo']