Enhancement: custom data range for 'Count of items in a time series'

[lguariento]

Hello,

the 'Count of items in a time series' visualisation has pre-assigned time intervals such as 1, 5, 10 years. Would it be possible to add custom ranges, such as 1796-1860 ; 1860-1914 ; 1914-1945 ; 1945-2000.

Thanks,
Luca