*.proto files were downloaded from https://github.com/scrosby/OSM-binary/tree/master/src and changed in following ways:

• File: osmformat.proto
• Reason: To eliminate continuous conversions from []byte to string
• Old code:

message StringTable {
   repeated bytes s = 1;
}

• New code:

message StringTable {
   repeated string s = 1;
}

• Comptatibility: This change is expected to be fully compatible with all PBF files.