Implement ISO amendments

[dgg]

Implement amendments:

• 170: Add VED(926)
• 171-173 and 175: deprecate SLL(694) in favor of SLE(925)
• 174: deprecate HRK(191) in favor of EUR(978)

Fixes #70

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.84%. Comparing base (b28bf32) to head (08eed09).

:exclamation: Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #71 +/- ## ========================================== + Coverage 77.57% 77.84% +0.27% ========================================== Files 62 62 Lines 1128 1124 -4 Branches 102 102 ========================================== Hits 875 875 + Misses 233 229 -4 Partials 20 20 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.