TODO:
    * compare feature
        [done] -- decided this is best supported by removing export to CSV function, and instead offering export to comparisons database (with a user-defined name)
           [done] -- then maintain DB of "sets" of comparisons
           [done] -- then can allow graph compare of current data to 1 (or more) exported comparions set 
              -- and show differences in graph including visually of any var changes in legend / or with tooltips
                - specifically legend is not working
                - tooltip (for legend?) not working
                - highlighting differences in vars at top (maybe via colour of label? and a tooltip?)
    * make save button create a comparison set to use
        (also consider how to clean / re-create db initial values from code -- easily could just drop/recreate per table, and only drop finance, not csets)
    * then delete export button


CONSIDER in code:
    * when we time the payment of GMHBA / HCF (and at what cadence) and include it in calcs better
        - it kicks in after pay stops, and could be paid monthly say, but it is higher than if we pay yearly (I think)
    * altering CBA share price / by likely annual changes -- speculative but also significant enough to make a difference

CONSIDER in real-world:
    * moving > $250k into say ING, then rabo-bank -- 4 months interest higher in each -- maybe to another provider after that
        while the balance is > $250k it offsets individual bank risk
    * maybe buying shares in something like berkshire-hathaway, or vanguard ETFs?


To run the code:

cd ~/src/finplan
source ./.python/bin/activate
FLASK_APP=main ./.python/bin/flask --debug run --host=192.168.0.2