--std=c++17 (#2330)

* switch to c++17

* more 17

* 1z

* use std::clamp

* Fix types in clamp

* bump submodules

* bump laika

Co-authored-by: Adeeb Shihadeh <adeebshihadeh@gmail.com>
old-commit-hash: 339d1967cb1e8ca73aeb1f0066a23b0933706ae5

SConstruct

@@ -138,6 +138,7 @@ env = Environment(
     "-Werror",
     "-Wno-unknown-warning-option",
     "-Wno-deprecated-register",
+    "-Wno-register",
     "-Wno-inconsistent-missing-override",
     "-Wno-c99-designator",
     "-Wno-reorder-init-list",
@@ -177,7 +178,7 @@ env = Environment(
   RPATH=rpath,
 
   CFLAGS=["-std=gnu11"] + cflags,
-  CXXFLAGS=["-std=c++14"] + cxxflags,
+  CXXFLAGS=["-std=c++1z"] + cxxflags,
   LIBPATH=libpath + [
     "#cereal",
     "#selfdrive/common",