reenable prospector in fort mode

fort mode prospect works. embark mode prospect doesn't crash but generates nonsense data, so that code has been disabled for now

docs/changelog.txt

@@ -34,6 +34,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 # Future
 
 ## New Plugins
+- `prospector`: prospector tool in fort mode is now available. embark prospect is not yet available and is disabled at this time.
 
 ## Fixes
 

plugins/CMakeLists.txt

@@ -140,7 +140,7 @@ dfhack_plugin(pathable pathable.cpp LINK_LIBRARIES lua)
 #dfhack_plugin(petcapRemover petcapRemover.cpp)
 #dfhack_plugin(plants plants.cpp)
 dfhack_plugin(probe probe.cpp)
-#dfhack_plugin(prospector prospector.cpp LINK_LIBRARIES lua)
+dfhack_plugin(prospector prospector.cpp LINK_LIBRARIES lua)
 #dfhack_plugin(power-meter power-meter.cpp LINK_LIBRARIES lua)
 dfhack_plugin(regrass regrass.cpp)
 add_subdirectory(remotefortressreader)

plugins/prospector.cpp

@@ -565,6 +565,10 @@ static command_result embark_prospector(color_ostream &out,
                                         df::viewscreen_choose_start_sitest *screen,
                                         const prospect_options &options)
 {
+    out.printerr("prospector at embark is not currently available.\n");
+    return CR_FAILURE;
+
+/*
     if (!world || !world->world_data)
     {
         out.printerr("World data is not available.\n");
@@ -621,6 +625,7 @@ static command_result embark_prospector(color_ostream &out,
     out << std::endl << "Warning: the above data is only a very rough estimate." << std::endl;
 
     return CR_OK;
+*/
 }
 
 static command_result map_prospector(color_ostream &con,