* tools: Add unparam linter
unparam detects unused parameters in functions, and a parameter to
a function which only ever takes on one value. The latter is an
indication that more tests are required.
There are many nolints in this PR, as I believe that writing tests
to fix alot of these situations is out of scope for this PR / it
will be changed in future commits. There are some nolints for
when we have to comply to normal api's.
* crypto/keys no longer used by x/gov/client/rest/rest.go
* x/stake: Limit the size of rationals from user input
This commit sets the maximum number of decimal points that can be
passed in from messages. This is enforced on the validate basic of
MsgBeginUnbonding and MsgBeginRedelegation. The cli has been
updated to truncate the user input to the specified precision. This
also updates types/rational to return big ints for Num() and Den().
Closes#887
* Switch NewFromDecimal to error instead of truncating
Merges the keybase and Ledger code from go-crypto (which is no more) into the SDK
Adds support for Ledger into gaiacli
Cherry-picks updated error handling from #1158