update testing info; bump version to 0.1.0

bump version to 0.0.20

bump version to 0.0.19

bump version to 0.0.18

last-minute README corrections for v0.0.17

bump version to 0.0.16

bump version to 0.0.15

bump version to 0.0.14

bump version to 0.0.11

Update README and bump version to 0.0.10

Since I'm about to release this version, update the README to mention
that I've tested it against beta 2 but not beta 1, but that the changes
in this release are not expected to cause problems with beta 1.