v1.6

• allow leaves() to take a simple filename
• move to pyproject installer

v1.5

fix poll()

v1.4

• add Command.poll()

v1.3

• miscellaneous improvements

v1.2

• added is_newer() path method.
• fix Cmd.start() so that it honors use_inform preference.
• improve brace_expand()

v1.1

Improve leaves().
Avoid python3.7 deprecation warning.
Fix bug in os_error reporting.

Version 0.8

Added inform support for enhanced error reporting.