Version 0.1.3-alpha

Fixed estimating, now a more realistic sum is done.

The previous version used a simple sum, but it had two downsides:

1. When you spend more than you estimated it silently ignore it, you had to manually adjust, which is easy to forget.
2. If you receive more than expected, same thing would occur.

So it's better using the accounted as estimated when the absolute accounted value is larger than the absolute estimated value.