Support async / await

add storageRangeAt

Update deploy_from_travis.sh

Fix go forward action

Fix storage retrieval

Fix tests

* decode struct + fix uint decoding

* decode array

* add solidity state dropdownpanel

* fix misc

* fix misc

Decode Array/Struct [WIP]

- address
- bool
- dynamic byte array
- enum
- fixed byte array
- string

Decode other types