Many Go projects released versions at v2 or higher without using a major version suffix before migrating to modules (perhaps before modules were even introduced). These versions are annotated with a +incompatible build tag (for example, v2.0.0+incompatible).
Reverts pin/tftp#67
We discussed that in #70: going to make v2 incompatible again. We will cut v3 to make the code fully compatible with go modules.
https://go.dev/ref/mod#major-version-suffixes