Thane Thomson a335caaedb alias amino imports (#3219)
As per conversation here: https://github.com/tendermint/tendermint/pull/3218#discussion_r251364041

This is the result of running the following code on the repo:

```bash
find . -name '*.go' | grep -v 'vendor/' | xargs -n 1 goimports -w
```
2019-01-28 16:13:17 +04:00
..
2019-01-28 16:13:17 +04:00
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2018-07-01 22:36:49 -04:00