Make JSON files for labels WCON-compatible
Manual and automatic labels are exported as JSON files.
Proposal: The data structure could be made compatible with the WCON format proposed to standardize the description of timeseries data for tracked objects.
Expected benefit: The exported data could be opened and processed by more tools, such as OWAT (although this particular tool is currently not a target by any means..). More interestingly, as an MWT-WCON converter already exists, the WCON format appears as an interesting alternative in the case the use of Choreography is ever dropped.
Note that decisions on output file formats should be taken as early as possible, as every future change may generate a lot of extra work if files in the deprecated formats are created and are to be supported.