Half-precision (16-bit) floating-point compression

Is there any subsequent plan to support f16 (half-precision) floating-point value compression? At this point, we can only select -f for single- and -d for double-precision compression.

The issue names no files or tests. Start by reviewing how the existing -f and -d compression selections are implemented, then determine the design and scope needed for f16 support. Done means half-precision floating-point values can be selected for compression and are covered by appropriate tests.

Written by the indexing model from the issue text.