Merge pull request keepkey#299 from keepkey/bugfix-1559-signatures

Bugfix 1559 signatures

release v7.1.8

Merge pull request keepkey#284 from keepkey/logic-bug

fix backward logic bug

Merge pull request keepkey#280 from keepkey/fix

missing parameter

Merge pull request keepkey#275 from keepkey/bump-version

bump version

Merge pull request keepkey#271 from keepkey/pub-712

bump version

Merge pull request keepkey#268 from keepkey/pub-711

release candidate v7.1.1

Merge pull request keepkey#266 from keepkey/pub-710

710 merge

Merge pull request keepkey#261 from keepkey/exchange-display

refine 0x exchange confirms

Merge pull request keepkey#248 from keepkey/rel-v6.7.0

Rel v6.7.0