[FR] Support for query history

[jamesawebb]

When queries fail, it would be great to be able to revert back to previous "known good versions". In addition, it would be great to be able to reference previous queries upon launching jnv. Perhaps the last X "good queries" can be saved and retrieved with some keystroke (looking at you ↑ and ↓ keys).

While I'm up - fantastic work - I love the tool.