refactor: rearrange the project to the src/ layout.0.10.3

Fix also pyproject.toml to generate what seems right.

Add the explicit dependency on nntplib for Python >= 3.12
(gh#python/cpython!104894).

Fixes: https://todo.sr.ht/~mcepl/pygn/7

1 files changed, 3 insertions, 0 deletions

diff --git a/test/whitelist-pygn2m b/test/whitelist-pygn2m
new file mode 100644
index 0000000..33044bc
--- /dev/null
+++ b/test/whitelist-pygn2m
@@ -0,0 +1,3 @@
+<ceplm@seznam.cz> {
+	From: = 'ceplm@seznam.cz'
+}