Adding support for Cosmos App v2.0.0

Includes support for both apps v1.5.x and v2.x.x.

Improving Nano X detection

Merge pull request #8 from ZondaX/nanox

upgrading ledger-go (improved nano X detection)

Support for Cosmos App v1.5

Merge pull request #6 from ZondaX/upgrade1.5

Upgrade support to Cosmos app v1.5

Support for Cosmos App v1.3.1

Merge pull request #5 from ZondaX/fix/backwcompat

Allow backward compatibility until 1.3.1 is out

Moving to cosmos dependencies

Merge pull request #1 from ZondaX/deps

fix dependency issue

Improved error handling

• Improving error messages for APDU_CODE_BAD_KEY_HANDLE