Fix NpmSpec prerelease-handling.

Thanks to Nathan Walters for spotting this.

Npm ranges with a `<X.Y.Z-P` component were not properly expanded:
they were converted to:
    <X.Y.0 || (>=X.Y.0 && <X.Y.Z-P && no-prerelease)

The correct expansion is:
    <X.Y.0 || (>=X.Y.0-* && <X.Y.Z-P)

Closes #86.

1 files changed, 7 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 6f63511..1158103 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,7 +4,13 @@ ChangeLog
 2.8.3 (unreleased)
 ------------------
 
-- Nothing changed yet.
+*New:*
+    - Add `Clause.prettyprint()` for debugging
+
+*Bugfix:*
+
+    * `#86 <https://github.com/rbarrois/python-semanticversion/issues/86>`_:
+      Fix handling of prerelease ranges within `NpmSpec`
 
 
 2.8.2 (2019-09-06)