refactor: modules-like behavior for systems removed to improve broken compile-time

Reffers to #32

example/alternative_namespaces/acceleration.h

@@ -1,7 +1,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/derived/acceleration.h>
 
 namespace units{
 namespace experimental{

example/alternative_namespaces/area.h

@@ -1,7 +1,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/derived/area.h>
 
 namespace area {
 

example/alternative_namespaces/capacitor_time_curve.cpp

@@ -20,7 +20,9 @@
     physical_quantities
 */
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/derived/capacitance.h>
+#include <units/physical/si/derived/resistance.h>
+#include <units/physical/si/base/time.h>
 #include <units/math.h>
 #include "./voltage.h"
 #include <iostream>

example/alternative_namespaces/density.h

@@ -2,7 +2,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/derived/density.h>
 
 namespace units{
 namespace experimental{

example/alternative_namespaces/force.h

@@ -1,7 +1,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/derived/force.h>
 
 namespace units{
 namespace experimental{

example/alternative_namespaces/length.h

@@ -2,12 +2,12 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
-#include <units/physical/si/imperial/imperial.h>
-#include <units/physical/si/international/international.h>
-#include <units/physical/si/typographic/typographic.h>
-#include <units/physical/si/us/us.h>
-#include <units/physical/si/iau/iau.h>
+#include <units/physical/si/base/length.h>
+#include <units/physical/si/imperial/base/length.h>
+#include <units/physical/si/international/base/length.h>
+#include <units/physical/si/typographic/base/length.h>
+#include <units/physical/si/us/base/length.h>
+#include <units/physical/si/iau/base/length.h>
 
 namespace units{
 namespace experimental{

example/alternative_namespaces/mass.h

@@ -2,7 +2,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/base/mass.h>
 
 namespace units{
 namespace experimental{

example/alternative_namespaces/time.h

@@ -1,7 +1,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/base/time.h>
 
 // named qtime due to conflict with time_t time(time_t*)
 namespace q_time {

example/alternative_namespaces/units_str.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include <units/physical/dimensions.h>
 #include <units/physical/si/prefixes.h>
 #include <units/quantity.h>
 // get at the units text of the quantity, without its numeric value

example/alternative_namespaces/voltage.h

@@ -2,7 +2,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/derived/voltage.h>
 
 namespace units{
 namespace experimental{

example/alternative_namespaces/volume.h

@@ -2,7 +2,7 @@
 
 #pragma once
 
-#include <units/physical/si/si.h>
+#include <units/physical/si/derived/volume.h>
 
 namespace units{
 namespace experimental{