* Allow a gaia-cli config file to be created
Closes#1613.
Closes#1275.
Closes#1956.
* Add homedir to Gopkg.toml
* Updates from code review
* Post-rebase fixes
* Update test
* Code review refactor
* Fixes from code review
* Fix import
* Fix broken test
* Fixes from rebase
* Fix formatting
* Change --gas=0 semantic and introduce --gas=simulate
Make --gas flag accept a conventional "simulate" string value in addition
to integers. Passing --gas=simulate would trigger the tx simulation and
set the gas according to the gas estimate returned by the simulation.
Any other integer value passed to --gas would be interpreted as-is and
and set as gas wanted value.
Closes: #2300
* Add test cases with gas=0
* ACK suggestion from @alexanderbez
* s/GasFlagSimulateString/GasFlagSimulate/
* Drop TODO comment on Gas type
* Enrich TODO with ref