Add the DAIInterestRateModel builder, and fix JumpRateModel args (#523)

* Add the DAIInterestRateModel builder, and fix JumpRateModel args

* add kovan scens (#524)

* add kovan scens

* add deploy

* fix

* Updated kovan files (#527)

* add mainnet scens (#525)

* Add Easier Hypotheticals for Scens (#526)

* Add Easier Hypotheticals for Scens

This makes it easy to simply add `-h` to a scenario being run in the repl and have it run hypothetically. This makes it easy to see exactly the effects that a scenario will have, similar to a dry-run, without actually running any production code.

* Add ability to run multiple scripts

* Get hypotheticals mostly working (#528)

* Get hypotheticals mostly working

* Hardcode values

* Max/deploy kovan (#529)

* rename interest rate model

* rename interest rate model

* Get scenarios fully working

* Get deployments out for Kovan and Mainnet

* Max / Jared DSR hypotheticals (#532)

* Max's dsr-migrate-kovan branch changes

upgrading tests interrupted by ganache

ganache conundrum

resign impl test

ganache bug update

transfer eth

fix value override

changes

Combine MCDai + SimMCDai

* Add a forked Kovan DAIInterestRateModel deploy scenario

Co-authored-by: Jared Flatow <[email protected]>

* Try to fix for saddle; possibly still some regressions to iron out

Co-authored-by: Max Wolff <[email protected]>
Co-authored-by: Mykel Pereira <[email protected]>
Co-authored-by: Geoff Hayes <[email protected]>

networks/kovan-fork.json

@@ -0,0 +1,4 @@
+{
+  "url": "https://kovan.infura.io/v3/e1a5d4d2c06a4e81945fca56d0d5d8ea",
+  "unlocked": ["0xA776184Fd6F545DAe5f51361dBcC9018549a9749"]
+}