The new buffer implementation will use RLE packed column counts.

Feature Requests

• til::rle<T, S> where S is the size type
  • OPTIONAL: When inserting an item that doesn't fit in the size type, break it up into multiple runs. For example, a til::rle<..., uint8_t> could support a length-257 run by emitting two runs of length 255 and 2
• substr(), which returns a subset rle. Based on this implementation.
• iterator: i need begin, end, cbegin, cend.
• iterator: i want to be able to + any number, not just ++ by one.
• iterator: i need to be able to subtract two iterators to get a distance.
• maybe a way to iterate over compressed units, for quick estimation and summing (!)