get current revision if using base uri
get current revision (5 in this case):
https://dev.textgridrep.org/browse/textgrid:3thgw.5
if requesting
https://dev.textgridrep.org/browse/textgrid:3thgw
via base uri
get current revision (5 in this case):
https://dev.textgridrep.org/browse/textgrid:3thgw.5
if requesting
https://dev.textgridrep.org/browse/textgrid:3thgw
via base uri