Set path to main func in goreleaser

Merge pull request hashicorp#278 from hashicorp/v-xz-CVE-2020-16845

deps: Update github.com/ulikunitz/[email protected]

Merge pull request hashicorp#256 from hashicorp/f-umask-master-may-2020

umask final version against master (again)

Merge pull request hashicorp#227 from hashicorp/jbardin/head-accept-r…

…ange

don't attempt range request without object size

Merge pull request hashicorp#205 from hashicorp/fix-go112-failures

Prevent test failures for invalid SCP-style URLs in go 1.12

Merge pull request hashicorp#168 from hashicorp/type_checksum_error

add a public type for a checksum error

Merge pull request hashicorp#140 from Charliekenney23/add-depth-query…

…-param-to-git-getter

Add depth query param to git getter

Merge pull request hashicorp#163 from hashicorp/checksum_pass_args

Various fixes

Merge pull request hashicorp#159 from hashicorp/windows_copy

getfile on windows: when a file cannot be symlinked for privilege reasons, copy it