v0.25.0

Changelog

a6b22d3 Add version command (open-telemetry#25)
1da8f73 Bump to OpenTelemetry Collector 0.20.0 (open-telemetry#10)
bd48b7d Don't use %w formatting with log.Fatal (open-telemetry#35)
7c67d1e Download go modules before building (open-telemetry#20)
f29b566 Explicitly enable Go modules in quickstart instructions (open-telemetry#13)
8ad7683 Generate a warning if the builder and collector base version mismatch (open-telemetry#30)
5b9df7b Pass errors from cobra Execute back to main for correct exit code (open-telemetry#28)
40a858e Replace master with main in CI and mergify files (open-telemetry#8)
35f8b0d Update to OpenTelemetry Collector 0.24.0
4056de9 Update to OpenTelemetry Collector 0.25.0 (open-telemetry#36)
409ad94 Update to collector v0.21.0 (open-telemetry#17)
c9fe696 Update to collector v0.22.0 (open-telemetry#19)
3d80039 Update to collector v0.23.0 (open-telemetry#27)
fdf9416 fixed panics (open-telemetry#6)