Tags: alvinl/stem

Update winston dependency

  - Change all instances of `process.kill()` to `process.exit(1)` to exit process correctly

Fix steam dependency version

Update dependencies

Improve tests performance

Fix to reflect trade offers api update

Update steam-trade-offers

Allow env variables to be used with launcher

- Fix for setting cookies properly
- Change dep. badge to david-dm
- Update request & winston dependencies

Add Inventory module to `Stem.inventory`

- Create proper modules for Stem.storage & Stem.api
- New method for storage module: .load
- Update request dependency

Emit `communityReady` on botOffers setup callback

Update api.addCommand to use regex instead.

- Remove code climate badge
- Add support for registering commands to group messages