add tests

Builds/CMake/RippledCore.cmake

@@ -755,6 +755,7 @@ if (tests)
     src/test/app/Taker_test.cpp
     src/test/app/TheoreticalQuality_test.cpp
     src/test/app/Ticket_test.cpp
+    src/test/app/Touch_test.cpp
     src/test/app/Transaction_ordering_test.cpp
     src/test/app/TrustAndBalance_test.cpp
     src/test/app/TxQ_test.cpp

src/ripple/protocol/Feature.h

@@ -74,7 +74,7 @@ namespace detail {
 // Feature.cpp. Because it's only used to reserve storage, and determine how
 // large to make the FeatureBitset, it MAY be larger. It MUST NOT be less than
 // the actual number of amendments. A LogicError on startup will verify this.
-static constexpr std::size_t numFeatures = 77;
+static constexpr std::size_t numFeatures = 78;
 
 /** Amendments that this server supports and the default voting behavior.
    Whether they are enabled depends on the Rules defined in the validated