v0.5.1

Install: pip install oxihipo==0.5.1

Fixed

• A corrupt bank offset table panicked instead of erroring. Four places sliced
  a decompressed bank stream with a byte range read from the record's own offset
  table — &stream[rec.bank_byte_range(e, b)] — in read_columns (both the
  by-bank and per-column branches) and in for_each_column (likewise). A damaged
  table points past the end of the stream, and indexing a slice raw panics:
  range end index 3400 out of range for slice of length 3379. Every other kind of
  damage in this reader surfaces as an Err, so this was reachable from scan,
  stats, hist and banks in any downstream tool, on a file that opened cleanly.

  A bank whose extent does not fit is now treated as absent, which is how a bank
  that is not there was already reported.

  Found by property-testing a downstream CLI against byte-flipped files, not by
  reading the code: the offsets have to survive enough of the header to be used at
  all, which is a narrow enough window that no hand-written case had hit it. The
  regression test flips every byte of a by-bank file three ways and drives every
  columnar entry point — which is what turned up the fourth site, after the first
  three were fixed.

  One further raw slice in the same function, &stream[..n * elem], was checked
  and left alone: n is derived by dividing by elem, so the bound holds by
  construction.