* update to borrow interest factor
* add supply interest factor to accrue interest
* supply interest factor keeper methods
* fix potential bug with user borrow indexing
* sync supply interest on deposit/withdraw
* separate withdraw/deposit
* relocate interest sync methods
* update comment
* simplify supply interest statement
* check truncated int not zero
* add .sub(storedAmount) back
* add store key suppliedcoins
* increment/decrement supplied coins
* update withdraw with new accounting
* update withdraw test
* catch repay edge case
* unit tests
* TestSupplyInterest scaffolding
* test notes
* temp: interest test
* example test
* changes, test checks more state
* fix: calculate supply interest directly
* fix: catch divide by zero
* add state checks back into interest test
* add snapshot test cases
* test owed supplied interest paid at correct ratio
* test user supply syncs user's borrow interest
* remove print statements and clean up
* refactor indented logic
* test supply/borrow multiple coins
* update decoder test
Co-authored-by: karzak <kjydavis3@gmail.com>
