chainlink

Description
Add a contract similar to Aave's AddressProvider or Uniswap's getPair() functionality.

Motivation
On-chain lookups of price oracles given the asset addresses.

Justification
String manipulation is difficult and expensive in Solidity, and you usually work with the token address, not its string name.

Hi, Patrick

Can you please only leave the .env.example file and delete the .env one?
Us newbies might end up leaving our mneumonic exposed, because .gitignore does not ignore files that are already there on github.

Thanks for all the top-notch teaching.

Version 0.6 of the LINK token imports openzeppelin contracts, which can cause conflicts when others want to use OZ packages.

Default to the mock contract using v0.4 of solidity to avoid collision

To the Chainlink devrel node

kovan:
    oracle: '0xc57b33452b4f7bb189bb5afae9cc4aba1f7a4fd8'
    jobId: 'd5270d1c311941d0b08bead21fea7747'
  rinkeby:
    oracle: '0xc57b33452b4f7bb189bb5afae9cc4aba1f7a4fd8'
    jobId: '6b88e0402e5d415eb946e528b8e0c7ba'

I am seeing that my local testing with ganche-cli is causing some issues connecting to the same network.

Repro steps:

1. Set the default network in the yanl file to ganache.
2. Install ganache-cli via npm. Start ganache-cli in one terminal tab.
3. Open a new terminal tab and add a ganache network. brownie networks add Ethereum ganache host=http://localhost:8545 chainid=1337.
4. Run

https://github.com/OpenZeppelin/damn-vulnerable-defi/tree/v1.0.0

OpenZepplin is probably the gold standard for security, and they made a list of challenges to sharpen your white hat hacking skills and spot vulnerable code.

Right now, you have to specifically define the parameters you want to use in the code, it would be great if you could add any input and it would map them appropriately.

Basically, remove this section:

const customParams = {
  quiet: false,
  quieter: false,
  silent: false,
  progress: false,
  trickle: false,
  pin: false,
  file: false,
  ipfs_host: false,
  endpoint: false,