Initial version of Steam Accounting based on Steam Receipt Bookmarklet by Jonathan Prusik

Features 3 accounts for the Steam market, store and ingame stores. It balances your Steam wallet funds with your Steam purchases.

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Improvements of Steam Receipt Bookmarklet
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- Do not count the table header (legend) as a transaction
- Do not count market transaction for creating or deleting offers.
=> Just recognize purchases (market and store) as well as market sales and count redeemed CD Keys.