Use "addr" property for Pin internals. Fixes gh-357

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
This is utterly insane.

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
v0.7.45

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
Merge remote-tracking branch 'origin/master'