refactor: example applications refactored to a new formatting syntax

README.md

@@ -58,7 +58,7 @@ analysis and unit/quantity manipulation.
 Here is a small example of possible operations:
 
 ```cpp
-#include <mp-units/systems/si/si.h>
+import mp_units;
 
 using namespace mp_units;
 using namespace mp_units::si::unit_symbols;
@@ -66,7 +66,7 @@ using namespace mp_units::si::unit_symbols;
 // simple numeric operations
 static_assert(10 * km / 2 == 5 * km);
 
-// unit conversions
+// conversions to common units
 static_assert(1 * h == 3600 * s);
 static_assert(1 * km + 1 * m == 1001 * m);
 
@@ -90,12 +90,9 @@ and dimensional analysis can be performed without sacrificing on runtime perform
 accuracy. Please see the below example for a quick preview of basic library features:
 
 ```cpp
-#include <mp-units/format.h>
-#include <mp-units/ostream.h>
-#include <mp-units/systems/international/international.h>
-#include <mp-units/systems/isq/isq.h>
-#include <mp-units/systems/si/si.h>
+#include <iomanip>
 #include <iostream>
+import mp_units;
 
 using namespace mp_units;
 
@@ -118,13 +115,13 @@ int main()
   constexpr quantity v6 = value_cast<m / s>(v4);
   constexpr quantity v7 = value_cast<int>(v6);
 
-  std::cout << v1 << '\n';                                  // 110 km/h
-  std::cout << v2 << '\n';                                  // 70 mi/h
-  std::cout << std::format("{}", v3) << '\n';               // 110 km/h
-  std::cout << std::format("{:*^14}", v4) << '\n';          // ***70 mi/h****
-  std::cout << std::format("{:%Q in %q}", v5) << '\n';      // 30.5556 in m/s
-  std::cout << std::format("{0:%Q} in {0:%q}", v6) << '\n'; // 31.2928 in m/s
-  std::cout << std::format("{:%Q}", v7) << '\n';            // 31
+  std::cout << v1 << '\n';                                        // 110 km/h
+  std::cout << std::setw(10) << std::setfill('*') << v2 << '\n';  // ***70 mi/h
+  std::cout << std::format("{:*^10}\n", v3);                      // *110 km/h*
+  std::cout << std::format("{:%N in %U}\n", v4);                  // 70 in mi/h
+  std::cout << std::format("{:{%N:.2f}%?%U}\n", v5);              // 30.56 in m/s
+  std::cout << std::format("{:{%N:.2f}%?{%U:n}}\n", v6);          // 31.29 in m s⁻¹
+  std::cout << std::format("{:%N}\n", v7);                        // 31
 }
 ```