add missing #includes

New compiler version exposed missing header files

resolves #123

src/conf.h

@@ -19,6 +19,7 @@
 #ifndef LAMINAR_CONF_H_
 #define LAMINAR_CONF_H_
 
+#include <string>
 #include <unordered_map>
 
 class StringMap : public std::unordered_map<std::string, std::string> {

src/server.h

@@ -24,6 +24,7 @@
 #include <capnp/message.h>
 #include <capnp/capability.h>
 #include <functional>
+#include <sys/types.h>
 
 struct Laminar;
 struct Http;