Split logger.h into log_reader and log_writer

Much simpler!

Change-Id: I6c4ee363b56b67dac40c456261bbed79d01b8eb6
diff --git a/y2020/control_loops/drivetrain/BUILD b/y2020/control_loops/drivetrain/BUILD
index a74b18e..1b98592 100644
--- a/y2020/control_loops/drivetrain/BUILD
+++ b/y2020/control_loops/drivetrain/BUILD
@@ -137,7 +137,7 @@
         ":localizer",
         "//aos/controls:control_loop_test",
         "//aos/events:simulated_event_loop",
-        "//aos/events/logging:logger",
+        "//aos/events/logging:log_writer",
         "//aos/network:team_number",
         "//aos/network:testing_time_converter",
         "//frc971/control_loops:team_number_test_environment",
@@ -160,7 +160,8 @@
         "//aos:init",
         "//aos/events:shm_event_loop",
         "//aos/events:simulated_event_loop",
-        "//aos/events/logging:logger",
+        "//aos/events/logging:log_reader",
+        "//aos/events/logging:log_writer",
         "//aos/testing:googletest",
         "//frc971/control_loops/drivetrain:drivetrain_lib",
         "@com_github_gflags_gflags//:gflags",
@@ -180,7 +181,8 @@
         "//aos:init",
         "//aos/events:shm_event_loop",
         "//aos/events:simulated_event_loop",
-        "//aos/events/logging:logger",
+        "//aos/events/logging:log_reader",
+        "//aos/events/logging:log_writer",
         "//frc971/control_loops/drivetrain:drivetrain_lib",
         "@com_github_gflags_gflags//:gflags",
         "@com_github_google_glog//:glog",
diff --git a/y2020/control_loops/drivetrain/drivetrain_replay.cc b/y2020/control_loops/drivetrain/drivetrain_replay.cc
index 1533316..9b2375b 100644
--- a/y2020/control_loops/drivetrain/drivetrain_replay.cc
+++ b/y2020/control_loops/drivetrain/drivetrain_replay.cc
@@ -5,7 +5,8 @@
 // in some other way. The original drivetrain status data will be on the
 // /original/drivetrain channel.
 #include "aos/configuration.h"
-#include "aos/events/logging/logger.h"
+#include "aos/events/logging/log_writer.h"
+#include "aos/events/logging/log_reader.h"
 #include "aos/events/simulated_event_loop.h"
 #include "aos/init.h"
 #include "aos/json_to_flatbuffer.h"
diff --git a/y2020/control_loops/drivetrain/drivetrain_replay_test.cc b/y2020/control_loops/drivetrain/drivetrain_replay_test.cc
index 4b02923..2e6b327 100644
--- a/y2020/control_loops/drivetrain/drivetrain_replay_test.cc
+++ b/y2020/control_loops/drivetrain/drivetrain_replay_test.cc
@@ -11,7 +11,8 @@
 #include "gtest/gtest.h"
 
 #include "aos/configuration.h"
-#include "aos/events/logging/logger.h"
+#include "aos/events/logging/log_writer.h"
+#include "aos/events/logging/log_reader.h"
 #include "aos/events/simulated_event_loop.h"
 #include "aos/init.h"
 #include "aos/json_to_flatbuffer.h"
diff --git a/y2020/control_loops/drivetrain/localizer_test.cc b/y2020/control_loops/drivetrain/localizer_test.cc
index d440aaf..d195b5d 100644
--- a/y2020/control_loops/drivetrain/localizer_test.cc
+++ b/y2020/control_loops/drivetrain/localizer_test.cc
@@ -3,7 +3,7 @@
 #include "gtest/gtest.h"
 
 #include "aos/controls/control_loop_test.h"
-#include "aos/events/logging/logger.h"
+#include "aos/events/logging/log_writer.h"
 #include "aos/network/message_bridge_server_generated.h"
 #include "aos/network/team_number.h"
 #include "aos/network/testing_time_converter.h"
diff --git a/y2020/control_loops/superstructure/BUILD b/y2020/control_loops/superstructure/BUILD
index d659920..3ea3dbf 100644
--- a/y2020/control_loops/superstructure/BUILD
+++ b/y2020/control_loops/superstructure/BUILD
@@ -105,7 +105,7 @@
         ":superstructure_status_fbs",
         "//aos:math",
         "//aos/controls:control_loop_test",
-        "//aos/events/logging:logger",
+        "//aos/events/logging:log_writer",
         "//aos/testing:googletest",
         "//aos/time",
         "//frc971/control_loops:capped_test_plant",
diff --git a/y2020/control_loops/superstructure/superstructure_lib_test.cc b/y2020/control_loops/superstructure/superstructure_lib_test.cc
index ac1e4a0..c406d09 100644
--- a/y2020/control_loops/superstructure/superstructure_lib_test.cc
+++ b/y2020/control_loops/superstructure/superstructure_lib_test.cc
@@ -4,7 +4,7 @@
 #include <memory>
 
 #include "aos/controls/control_loop_test.h"
-#include "aos/events/logging/logger.h"
+#include "aos/events/logging/log_writer.h"
 #include "frc971/control_loops/capped_test_plant.h"
 #include "frc971/control_loops/position_sensor_sim.h"
 #include "frc971/control_loops/team_number_test_environment.h"