Switch amount data type from int to float?

[joshskidmore]

Currently, forx does't support amounts that aren't whole integers. For instance, forx btc usd -q .12 returns forx: error: argument -q: invalid int value: '.12'. Changing the type from int to float on line 72 in convert.py seems to resolve the issue, but I'm unsure of repercussions. I'm more than happy to submit a PR for this as well.

[Gbox4]

Nice catch, thanks! The change you suggested worked, not any repercussions as the -q value is only used when multiplying by the exchange rate.