This patch add two window methods: addchstr and addchnstr and also module attribute chtype_size.  Methods use addstr convention i.e. calling with/without new cursors coords is allowed.

Methods accept any buffer-object (string, array, ctypes string buffer) of length n*chtype_size.

File Added: test_addchstr.py

I'm doubtful about passing strings of characters that contain characters
+ attrs.  The usual convention used by the curses module is to allow
strings containing attributeless characters to display, or integers that
can include an attribute value.

Perhaps these functions can take an iterable containing either
1-character strings or integers, and assemble them into a C-level array.

Doc additions haven't been included with the patches.

Bump, I just found out addchstr() is unsupported, which is unfortunate as there doesn't seem to be any other easy way to prevent line wrapping if you submit too long strings to addstr() without keeping track of the x location and/or the string length by hand.