Merge branch 'develop' into dev_stargate_orm

* develop:
  Allow export of Liquidity Provider accounts
  Hotfix/v0.9.3 v2 best price in querier response (#40)
  Merge branch 'hotfix/v0.9.3'
  PR for issue 33 (#37)
  Move buildspec.yml to .aws

x/liquidityprovider/types/account.go

@@ -15,6 +15,7 @@ import (
 )
 
 var _ auth.AccountI = &LiquidityProviderAccount{}
+var _ auth.GenesisAccount = &LiquidityProviderAccount{}
 
 func NewLiquidityProviderAccount(account auth.AccountI, mintable sdk.Coins) (*LiquidityProviderAccount, error) {
 	msg, ok := account.(proto.Message)
@@ -31,6 +32,19 @@ func NewLiquidityProviderAccount(account auth.AccountI, mintable sdk.Coins) (*Li
 	}, nil
 }
 
+func (acc LiquidityProviderAccount) Validate() error {
+	if err := acc.Mintable.Validate(); err != nil {
+		return sdkerrors.Wrap(err, "mintable")
+	}
+	type validatable interface {
+		Validate() error
+	}
+	if a, ok := acc.GetNestedAccount().(validatable); ok {
+		return a.Validate()
+	}
+	return nil
+}
+
 func (acc *LiquidityProviderAccount) IncreaseMintableAmount(increase sdk.Coins) {
 	acc.Mintable = acc.Mintable.Add(increase...)
 }