v0.6.0

Added

• --quiet on zombi2 tools format, matching the level commands — it suppresses the summary line,
  for a log file or a batch of runs. (#242)

Changed

• Gene-copy ids are now written g<id> in every genome table — genomes.tsv, genome_events.tsv,
  gene_order.tsv, blocks.tsv and initial_genome.tsv, in both the copy and parent columns.
  This is the same token the gene-tree Newick leaves, the alignment FASTA headers and the homology
  tables already use, so a gene copy now joins across every file of a run with no translation step
  (previously the tables held a bare integer while the trees/alignments held g<id>). The column
  names are unchanged; this is a breaking change to the values those columns hold.
• A joint (zombi2 joint) driver mapping that names a state outside the trait's declared alphabet is
  now refused. A key that can never occur — a typo such as {"caev": 4.0} for a cave/surface trait —
  is caught up front instead of silently applying to nothing. The conditioned (file-driven) path is
  unchanged: it still refuses only a mapping that matches none of the driver's observed states.

Fixed

• The run-completion line no longer doubles a trailing slash: a directory given as out/ (as the
  quickstart shows) now echoes as wrote out/, not wrote out//. (#242)
• A conditioned rate whose DrivenBy points at a missing file now reports it as a missing driver file
  (with the path and how to fix it), instead of a bare [Errno 2] No such file or directory. (#242)
• parallel= no longer crashes with a raw BrokenProcessPool when called from a notebook, python -c,
  or a stdin heredoc (where worker processes cannot re-import your program). It falls back to
  single-process with a one-line note; a .py script or the CLI still uses every core. (#242)