update .gitattributes to take care of CRLF before commit

Author: jeremyleung521

.git-blame-ignore-revs

@@ -41,3 +41,5 @@ c08cb797fd1a2cb45bc0b9e4522cabb15d1f36bd
 b8fe34b73c9df9330c1608229b2f8cddc6e275b4
 #4885
 263bbe65047e535fbad981852ad9c7327826f93d
+#5446
+89e295b3fb76ddaa05327162fd0dd2f6b0562b9a

.gitattributes

@@ -0,0 +1,5 @@
+# Ensure all line endings for text files are LF (UNIX, Python default) and not CRLF (Windows/DOS default)
+* text=auto eol=lf
+
+# Data files from testsuite/MDAnalysisTests/data/windows/* need to end with CRLF for Windows testing
+testsuite/MDAnalysisTests/data/windows/* text=auto eol=crlf

package/CHANGELOG

@@ -68,6 +68,9 @@ Fixes
    to version 5.1.0 (Issue #5145, PR #5146)
  * Fixes incorrect assignment of secondary structure to proline residues in
    DSSP by porting upstream PyDSSP 0.9.1 fix (Issue #4913)
+ * Added `.gitattributes` to enforce LF (\n) as line endings and renormalized
+   existing files to conform (Issue #5315, PR #5446)
+
 
 Enhancements
  * Added ASV benchmark for PDB trajectory reading (PR #5394)