Move 2.7 to 2 (#635)

Closes #579.

stdlib/2/unicodedata.pyi

@@ -0,0 +1,40 @@
+"""Stubs for the 'unicodedata' module."""
+
+from typing import Any, TypeVar, Union
+
+ucd_3_2_0 = ... # type: UCD
+unidata_version = ... # type: str
+# PyCapsule
+ucnhash_CAPI = ... # type: Any
+
+_default = TypeVar("_default")
+
+def bidirectional(unichr: unicode) -> str: ...
+def category(unichr: unicode) -> str: ...
+def combining(unichr: unicode) -> int: ...
+def decimal(chr: unicode, default: _default = ...) -> Union[int, _default]: ...
+def decomposition(unichr: unicode) -> str: ...
+def digit(chr: unicode, default: _default = ...) -> Union[int, _default]: ...
+def east_asian_width(unichr: unicode) -> str: ...
+def lookup(name: str) -> unicode: ...
+def mirrored(unichr: unicode) -> int: ...
+def name(chr: unicode, default: _default = ...) -> Union[str, _default]: ...
+def normalize(form: str, unistr: unicode) -> unicode: ...
+def numeric(chr, default: _default = ...) -> Union[float, _default]: ...
+
+class UCD(object):
+    unidata_version = ... # type: str
+    # The methods below are constructed from the same array in C
+    # (unicodedata_functions) and hence identical to the methods above.
+    def bidirectional(self, unichr: unicode) -> str: ...
+    def category(self, unichr: unicode) -> str: ...
+    def combining(self, unichr: unicode) -> int: ...
+    def decimal(self, chr: unicode, default: _default = ...) -> Union[int, _default]: ...
+    def decomposition(self, unichr: unicode) -> str: ...
+    def digit(self, chr: unicode, default: _default = ...) -> Union[int, _default]: ...
+    def east_asian_width(self, unichr: unicode) -> str: ...
+    def lookup(self, name: str) -> unicode: ...
+    def mirrored(self, unichr: unicode) -> int: ...
+    def name(self, chr: unicode, default: _default = ...) -> Union[str, _default]: ...
+    def normalize(self, form: str, unistr: unicode) -> unicode: ...
+    def numeric(self, chr: unicode, default: _default = ...) -> Union[float, _default]: ...