basic compounding stuff... pv, fv, npv
T-Accounts and Journal Entries...
Example of how manufactoring goods is accounted
add print(List<Transaction>)
Inventory management and calculating COGS (FIFO and LIFO)
Fixing inventory example (organize imports)
Improving formatter (formatDate() added)
MarketableSecurities example
MarketableSecurity class added
add method "plug()" for plugging accounts to make an entry balanced.
add method "sell" to MarketableSecurity
Example Held-to-Maturity
Renaming Hold- to  Held-to-Maturity
FIXUP! organize imports
FIXUP! organize imports
adding some utility methods
adding Bonds (Long term liability)
Bond retirement