churn: wrapped docstrings at 78 characters

hgext/churn.py

@@ -94,15 +94,13 b' def countrate(ui, repo, amap, *pats, **o'
 def churn(ui, repo, *pats, **opts):
     '''histogram of changes to the repository
 
-    This command will display a histogram representing the number
-    of changed lines or revisions, grouped according to the given
-    template. The default template will group changes by author.
-    The --dateformat option may be used to group the results by
-    date instead.
+    This command will display a histogram representing the number of changed
+    lines or revisions, grouped according to the given template. The default
+    template will group changes by author. The --dateformat option may be used
+    to group the results by date instead.
 
-    Statistics are based on the number of changed lines, or
-    alternatively the number of matching revisions if the
-    --changesets option is specified.
+    Statistics are based on the number of changed lines, or alternatively the
+    number of matching revisions if the --changesets option is specified.
 
     Examples:
 
@@ -118,8 +116,8 b' def churn(ui, repo, *pats, **opts):'
       # display count of lines changed in every year
       hg churn -f '%Y' -s
 
-    It is possible to map alternate email addresses to a main address
-    by providing a file using the following format:
+    It is possible to map alternate email addresses to a main address by
+    providing a file using the following format:
 
     <alias email> <actual email>