Added shared library build option

Makefile

@@ -135,3 +135,17 @@ $(TARGET): $(OBJECTS)
 clean:
 	-rm -f *.o ./src/*.o ./src/*.o.tmp ./lib/libBigWig/*.o
 	-rm -f $(TARGET)
+	-rm -rf libgw
+
+
+SHARED_TARGET = libgw/libgw.so
+ifeq ($(PLATFORM),"Darwin")
+    SHARED_TARGET = libgw/libgw.dylib
+endif
+
+shared: CXXFLAGS += -fPIC
+shared: $(OBJECTS)
+	-mkdir -p libgw/include
+	-cp src/*.h libgw/include
+	-cp include/*.h libgw/include
+	$(CXX) $(OBJECTS) $(LDFLAGS) $(LDLIBS) -shared -o $(SHARED_TARGET)

docs/docs/install/Windows.md

@@ -27,8 +27,6 @@ Download the GW installer script below:
 
 [GW Intel x86_64 Windows installer](https://github.com/kcleal/gw/releases/download/v0.9.3/gw-windows-installer.vbs)
 
-[GW Intel x86_64 Windows installer](https://github.com/kcleal/gw/releases/download/v0.9.2/gw-windows-installer.vbs)
-
 
 Run the downloaded visual-basic script by double-clicking, or right-clicking and selecting Run as program.
 The script will install GW, add a shortcut to GW in the Start Menu and put GW on your PATH. This means GW

src/plot_controls.cpp

@@ -1816,6 +1816,7 @@ namespace Manager {
                 tracks.push_back(HGW::GwTrack());
                 try {
                     tracks.back().open(pth, true);
+                    tracks.back().variant_distance = &opts.variant_distance;
                     std::cout << termcolor::magenta << "\nTrack       " << termcolor::reset << pth << "\n";
                 } catch (...) {
                     tracks.pop_back();

src/plot_manager.cpp

@@ -878,7 +878,7 @@ namespace Manager {
 
             SkPaint cog_paint = opts.theme.lcBright;
             cog_paint.setAntiAlias(true);
-            cog_paint.setStrokeWidth(6);
+            cog_paint.setStrokeWidth(3 * monitorScale);
             cog_paint.setStyle(SkPaint::kStrokeAndFill_Style);
             canvas->drawCircle(15 * monitorScale, half_h - 12.5 * monitorScale, 5 * monitorScale, cog_paint);