Originally from #111
There are additional SI units that we don't have, which are legacy realizations of the base units. I wonder if we to incorporate them in UnitsDB (probably).
Found 20 differences in units:
+---------------------------------------------------------------+
| Unit Name Differences |
+-----------------+--------------------+------------------------+
| Identifier | SI Reference (TTL) | YAML |
+-----------------+--------------------+------------------------+
| SI#ampere1948 | ampere1948 | (not found) |
| SI#ampere2018 | ampere2018 | (not found) |
| SI#candela1948 | candela1948 | (not found) |
| SI#candela1967 | candela1967 | (not found) |
| SI#candela1979 | candela1979 | (not found) |
| SI#candela2018 | candela2018 | (not found) |
| SI#kelvin1967 | kelvin1967 | (not found) |
| SI#kelvin2018 | kelvin2018 | (not found) |
| SI#kilogram1901 | kilogram1901 | (not found) |
| SI#kilogram2018 | kilogram2018 | (not found) |
| SI#metre1889 | metre1889 | (not found) |
| SI#metre1927 | metre1927 | (not found) |
| SI#metre1960 | metre1960 | (not found) |
| SI#metre1983 | metre1983 | (not found) |
| SI#metre2018 | metre2018 | (not found) |
| SI#mole1971 | mole1971 | (not found) |
| SI#mole2018 | mole2018 | (not found) |
| SI#second1960 | second1960 | (not found) |
| SI#second1967 | second1967 | (not found) |
| SI#second2018 | second2018 | (not found) |
+-----------------+--------------------+------------------------+
Originally from #111
There are additional SI units that we don't have, which are legacy realizations of the base units. I wonder if we to incorporate them in UnitsDB (probably).