Update go modules

Merge pull request #18 from go-gnss/set-write-deadline

set write deadline in write function

Merge pull request #16 from go-gnss/v1-no-sourcetable

Don't serve sourcetable on NTRIP v1 error responses

defer close request body

Force non-chunked encoding of v2 sourcetable response

Minor Fixes

Merge pull request #15 from go-gnss/fix-v1-sourcetable

Add headers to v1 sourcetable response

Merge pull request #12 from go-gnss/minor-fixes

Add error checking to v1 requests - add log attributes

Add error check in new client

Merge pull request #11 from go-gnss/client-default-v2

Simplify client code slightly and add examples