[gmime] Updated TODO

[Jeffrey Stedfast <fejj src gnome org>]

commit 9b57ccae5bc16fe9536c05be3b477c3ec9b47f0f
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Tue Jan 31 14:20:51 2017 -0500

    Updated TODO

 TODO |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/TODO b/TODO
index 3d4e990..b60ca5b 100644
--- a/TODO
+++ b/TODO
@@ -6,6 +6,10 @@ tasks are presented in.
 GMime 2.8 / 3.0 Planning:
 =========================
 
+- Drop GMime-Sharp support? Not sure it's worth maintaining now that
+  I've written MimeKit which will always be a far nicer .NET API
+  than I could make GMime-Sharp.
+
 - Drop the use of GMimeHeaderList's stream cache and instead solve
   this problem by using a per-header cache of the original raw value.