ledger/ledger — pull request #329 by eliptus (2014-11-13 06:58:37+00:00)
Title: Support Approximate Balance Assertions

```
commodity STK
format 1,000.000 STK

2014/01/01 * Statement Balance
Brokerage 123.456789 STK @@ 100.00 USD
Checking -100.00 USD

2014/01/01 * Statement Balance
Brokerage 0 =~ 123.457 STK
```