* Pin protobuf packages
It happened in the past that I ran with the wrong protobuf version
installed locally, and apparently there is even still some file wrong in
splithttp. Fix this issue once and for all.
* bump protobuf packages
* Revert "bump protobuf packages"
This reverts commit 7a3509346a.
* Revert "Revert "bump protobuf packages""
This reverts commit bb79707d15.
* fix deprecated grpc usage
* maxUploadSize -> scMaxEachPostBytes, default is 1MB on both sides (was 2MB on the server)
* minUploadIntervalMs -> scMinPostsIntervalMs, default is 30ms on the client (no server support for now)
* maxConcurrentUploads -> scMaxConcurrentPosts, default is 100 on both sides (was 200 on the server)
* maxUploadSize and maxConcurrentUploads can now be ranges on the client
* maxUploadSize is now enforced on the server
* the default of maxUploadSize is 2MB on the server, and 1MB on the client
* the default of maxConcurrentUploads is 200 on the server, and 100 on the client
* ranges on the server are treated as a single number. if server is configured as `"1-2"`, server will enforce `2`
* querystrings in `path` are now handled correctly
