V1.3

Fix typos, update default currencies.

V1.2

Add API key support.

Please get a free API key from https://free.currencyconverterapi.com/free-api-key

To configure your API key, please refer to https://github.com/TimothyYe/exchangerate#get-api-key

V1.1

Parse amount with the comma.

V1.0

for release V1.0