Merge branch 'python3-support' into 'master'

Python3 support

This branch is based on GitLab-CI support, and should be merged after !1.

We added support for both `python2` and `python3` in the codebase, but it still has python2 hard-coded.

For now we are patching the interpreter used in omnibus to change it to python3 to keep backward compatibility with users using it by source.

In the near future, we will make this switchable with the help of an initializer.

See merge request !2

HISTORY.md

+## 1.4.0 (TO BE RELEASED)
+
+* GitLab CI support
+* Fixed `.pod` test files to use newer syntax.
+* Changes to support Python 3 (it's not out-of-the box yet, you still need to patch code)
+
 ## 1.3.3 (2015-02-17)
 * Address a slight typo with `POSIX` [#456](https://github.com/github/markup/pull/456)

lib/github/commands/rest2html

@@ -31,9 +31,11 @@ import sys
 import os
 # This fixes docutils failing with unicode parameters to CSV-Table. The -S
-# switch and the following 2 lines can be removed after upgrading to python 3.
-reload(sys)
-sys.setdefaultencoding('utf-8')
+# switch and the following 3 lines can be removed after upgrading to python 3.
+if sys.version_info[0] < 3:
+    reload(sys)
+    sys.setdefaultencoding('utf-8')
+
 import site
 try:
@@ -43,6 +45,7 @@ except:
     pass
 import codecs
+import io
 from docutils import nodes
 from docutils.parsers.rst import directives, roles
@@ -162,7 +165,11 @@ def main():
     except IOError:  # given filename could not be found
         return ''
     except IndexError:  # no filename given
-        text = sys.stdin.read()
+        if sys.version_info[0] < 3: # python 2.x
+            text = sys.stdin.read()
+        else: # python 3
+            input_stream = io.TextIOWrapper(sys.stdin.buffer, encoding='utf-8')
+            text = input_stream.read()
     writer = Writer()
     writer.translator_class = GitHubHTMLTranslator
@@ -185,5 +192,9 @@ def main():
     return ''
 if __name__ == '__main__':
-    sys.stdout.write("%s%s" % (main(), "\n"))
+    if sys.version_info[0] < 3: # python 2.x
+        sys.stdout.write("%s%s" % (main(), "\n"))
+    else: # python 3
+        output_stream = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
+        output_stream.write("%s%s" % (main(), "\n"))
     sys.stdout.flush()