Support two missing modern currencies, CNH and EEK

[moxious]

Propose the addition of these two:

{
    code: 'CNH',
    decimals: 2,
    name: 'Chinese yuan (offshore)',
},
{
    code: 'EEK',
    decimals: 2,
    name: 'Estonian kroon',
}

The CNH entry is justified by this discussion of how Chinese currency works on international markets.

And here is a reference to the Estonian Kroon