Update protoc-gen-start dependency and add filepath.ToSlash() to fix #611

[nvx]

Required more than just the dependency update, also had to add in filepath.ToSlash() to fix the module parameter issue.

[nvx]

Looks like the build is failing due to some unrelated python protoc version issues? As far as I can tell my PR is fine. Hesitant to regenerate files that are unrelated to the PR and pollute the commits.

[elliotmjackson]

Hi @nvx, thanks for your patience with this PR. I don't quite understand whats happening here...

ToSlash returns the result of replacing each separator character in path with a slash ('/') character. Multiple separators are replaced by multiple slashes.

we have a replace all func to create the path, and a ToSlash func to perform the same operation... please explain 👓

[nvx]

Hi @nvx, thanks for your patience with this PR. I don't quite understand whats happening here...

ToSlash returns the result of replacing each separator character in path with a slash ('/') character. Multiple separators are replaced by multiple slashes.

we have a replace all func to create the path, and a ToSlash func to perform the same operation... please explain 👓

#611 describes the issue that this PR fixes. The filepath.ToSlash func is required to translate backslashes on Windows to forward slashes as the module name always uses forward slashes, as does the TrimLeft function call.

[elliotmjackson]

It is worth noting, i have upgraded PGS so this issue is likely already solved in v0.6.8

[nvx]

It is worth noting, i have upgraded PGS so this issue is likely already solved in v0.6.8

I noticed that, and updating PGS is also needed, but I found just updating PGS wasn't enough, the ToSlash change is also needed.