Inital history graph implementation and using linear scales where applicable.

- geometry.h for geometry calculation functions
- scale.h for implementations of scales (currently only the linear scale)
- updated main_view.qml for the new HistoryGraph component
- HistoryGraph displays each subsample used as a mini scatterplot (no colors
  currently)
- Scatterplot now uses scale.h for transformations
- Code cleanup and some bug fixes

1 files changed, 3 insertions, 1 deletions

diff --git a/main_view.qml b/main_view.qml
index 4c349f9..49448cb 100644
--- a/main_view.qml
+++ b/main_view.qml
@@ -77,9 +77,11 @@ ApplicationWindow {
             }
         }
 
-        ScrollView {
+        Rectangle {
             Layout.fillWidth: true
             Layout.minimumHeight: 150
+            border.width: 1
+            border.color: "#cccccc"
 
             HistoryGraph {
                 id: history