Store every Bond ROI

[Zayen-X]

Request from @jawz

Quote:

I believe having them show on front end can allow ppl to just get a CTA

Open questions:

• Is TheGraph the best place for this? We would have to update the graph everytime we release a bond.

[Zayen-X]

@drondin lets talk about if this is the right thing to do.

[drondin]

hmmm we might be able to do this using this event (only available in latest bond versions, not in old ones)

    event BondCreated( uint deposit, uint indexed payout, uint indexed expires, uint indexed priceInUSD );

[Zayen-X]

i think that makes sense the new ones are fine going forward.