libtrellis: Add requested fixes.

Signed-off-by: William D. Jones <thor0505@comcast.net>

libtrellis/include/Tile.hpp

diff --git a/libtrellis/include/Tile.hpp b/libtrellis/include/Tile.hpp
index 7d87bf0..4c5059f 100644
--- a/libtrellis/include/Tile.hpp
+++ b/libtrellis/include/Tile.hpp
@@ -1,7 +1,6 @@
 #ifndef LIBTRELLIS_TILE_HPP
 #define LIBTRELLIS_TILE_HPP
 
-#include <iostream>
 #include <string>
 #include <iostream>
 #include <cstdint>

libtrellis/src/Tile.cpp

diff --git a/libtrellis/src/Tile.cpp b/libtrellis/src/Tile.cpp
index ba0ef69..05b2cc0 100644
--- a/libtrellis/src/Tile.cpp
+++ b/libtrellis/src/Tile.cpp
@@ -24,6 +24,7 @@
 // center. Mainly for MachXO2.
 // TODO: Make const.
 map<pair<int, int>, pair<int, int>> center_map = {
+    // 1200HC
     {make_pair(12, 21), make_pair(6, 12)}
 };