Merge pull request #82 from BTrDB/ch9333-newline-issue

ch9333 set newline char

Author: davidkonigsberg

.github/workflows/release.yaml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         python-version: [3.6, 3.7, 3.8]
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:
     - uses: actions/checkout@v2

btrdb/transformers.py

@@ -267,7 +267,7 @@ def to_csv(streamset, fobj, dialect=None, fieldnames=None, agg="mean", name_call
     @contextlib.contextmanager
     def open_path_or_file(path_or_file):
         if isinstance(path_or_file, str):
-            f = file_to_close = open(path_or_file, 'w')
+            f = file_to_close = open(path_or_file, 'w', newline='')
         else:
             f = path_or_file
             file_to_close = None