Release 0.33 · hpc/charliecloud

Highlights:

ch-image and ch-run now have tab-completion for Bash (#1618, #1652)
ch-ssh has been removed (#1379). We were able to identify no one who wanted to keep it.

What else is new:

ch-convert:
- now accepts empty directory as valid output path (#1612)
- now accepts -s/--storage like the other executables (#1650)
ch-image:
- --force=seccomp (the default force mode) now works for PowerPC (#1663).
- no longer warns if $CH_GROW_STORAGE is set (#1007)
- build cache no longer:
  - tries to use multiple Git versions simultaneously (#1606)
  - erroneously re-uses imported base images (#1658)
- delete:
  - now accepts a list of images, not just one (#1626)
  - now removes target image from the cache too (#1485)
- no longer crashes ...
  - on pushing imported images (#1513)
  - when stdout does not support curly quotes (#1629)
  - when using some storage directories that have been moved (#1657)
miscellaneous bug fixes & improvements in:
- documentation & logging/errors (#1547, #1611, #1643, #1667)
- test suite and examples (#210, #1509, #1614, #1615, #1621, #1623, #1624, #1628, #1642, #1647, #1649, #1662, #1675)
- bugs both introduced and fixed during release cycle (#1648, #1659)

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