Version 1.6.1

Added

• Document internal handling of varints.
• Add aliases for fixed iterators, too.

Changed

• The const_fixed_iterator is now a random access iterator making code using it potentially more performant (for instance when using std::distance)
• Overloads std::distance for the varint and svarint iterators. This is better than the workaround with the rage_size function used before.

Fixed

• Rename .proto files in some tests to be unique. This solves a problem when building with newer versions of the Google Protobuf library.
• Floating point comparisons in tests are now always correctly done using Approx().