Currency output formatting

Can the currency output be: - Rounded to 2 decimal places by default - The "approx." text supressed by default - Optionally allow excluding the currency symbol in config Can all of the above be configurable in config file? Currently getting clean output like `13.55` requires: `@plain_number @noapprox 10 GBP to USD to 2 dp` By default, `10 GBP to USD` returns `approx. 13.556019485 USD`, which is not very human or scripting friendly.