A CLDR metazone can have optional `from` and/or `to` fields, such described in https://www.unicode.org/reports/tr35/tr35-dates.html#Metazone_Names Currently, this library doesn't take these dates into account, leading to issues such as #116
A CLDR metazone can have optional
fromand/ortofields, such described in https://www.unicode.org/reports/tr35/tr35-dates.html#Metazone_NamesCurrently, this library doesn't take these dates into account, leading to issues such as #116