Relevant skipped tests in integration_test.go:
- "invalidVersionMarker_ion_0_0.ion"
- "invalidVersionMarker_ion_1234_0.ion"
- "invalidVersionMarker_ion_1_1.ion"
- "invalidVersionMarker_ion_2_0.ion"
- "invalidVersionMarker_unsupported_major_version.ion"
- "invalidVersionMarker_unsupported_minor_version.ion"