avoid literal __END__ in code, to avoid confusing vim syntax highlighting
avoid $VERSION assignments in comments that are hiding in PPI::Statement nodes

For example, any comment inside a sub will have the comment's contents show up
in the PPI::Statement's content string, such as in Module::Metadata version
1.000022 line 668.

Conflicts:
	Changes
issue some diagnostics under --verbose for build/test commands
delete tempdir_root (usually tmp) at the end of tests