Merge pull request #1214 from wright-group/local-version

sanitize local version

Author: rpm4

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+## Changed
+- local version identifier uses only ASCII letters/numbers and periods (PEP 440)
+
 ## [3.6.0]
 
 ### Added

WrightTools/__version__.py

@@ -32,6 +32,9 @@
 if p.exists():
     with open(str(p)) as f:
         __branch__ = f.readline().rstrip().split(r"/")[-1]
-    __version__ += "+" + __branch__
+    # clean local verson (PEP 440)
+    __version__ += (
+        f"+{''.join(char if (char.isalnum() or char=='.') else '.' for char in __branch__)}"
+    )
 else:
     __branch__ = None