Fix for change and tiny fee calculations #112
Merged
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With the change to tiny dust limits and 0.05 sat / byte tx fee rates some of the rounding needed re-visited as off by one bugs were noticed when calculating change.
This has been remedied by using floating point as much as possible and using an int conversion as late as possible to ensure accurate figures.
This has resulted in some tests that had questionable results now becoming more accurate also.