MUD

No much is new in this release - mainly contributions from @rdale and @gtristan, and other fixes. Strata artifacts are now uploaded to kbas as well as chunks.

3678239 Strata artifacts really should be bit-for-bit
e6af454 Many chunks have no 'kind'
493a3b1 Better fix for mis-typed arch
ad8d245 Revert "Log when skipping definition because of arch"
be5c98a Upload strata too
4ed45c9 Separate out hash_factors function
8427490 Another attempt at claim, can ctrl-c
57bb486 Merge pull request #190 from gtristan/defensive-claim-exception
1557381 Merge pull request #187 from gtristan/yaml-parse-errors
b88e6e6 assembly.py: Handle the flock() exception more aggressively
aa41ac1 definitions.py: Log YAML parse errors while loading definitions
c11cb2d Log when skipping definition because of arch
9831880 Merge pull request #186 from rdale/rdale/fix-artifact-splitting-regressions
c5fe9cd Fix artifact splitting regressions
c3fa823 Merge pull request #181 from gtristan/change-renames-moves
2d943c8 kbas/main.py: Use shutil.move() instead of os.rename()
11b0f7d cache.py: Use shutil.move() instead of os.rename()
35d6e4d repos.py: Use shutil.move() instead of os.rename()