Index: ext/sqlite3/sqlite3.vc140.vcxproj
===================================================================
diff -u -N -r2e4eacb299f21d06196fe13140b4b0d095abdca9 -r318ace3ec2b5cf68de6aeb5a04b56c4389565e5a
--- ext/sqlite3/sqlite3.vc140.vcxproj	(.../sqlite3.vc140.vcxproj)	(revision 2e4eacb299f21d06196fe13140b4b0d095abdca9)
+++ ext/sqlite3/sqlite3.vc140.vcxproj	(.../sqlite3.vc140.vcxproj)	(revision 318ace3ec2b5cf68de6aeb5a04b56c4389565e5a)
@@ -174,7 +174,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -184,6 +184,7 @@
       <EnableEnhancedInstructionSet>NoExtensions</EnableEnhancedInstructionSet>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <ModuleDefinitionFile />
@@ -198,7 +199,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -207,6 +208,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <ModuleDefinitionFile />
@@ -219,7 +221,7 @@
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <PrecompiledHeader />
@@ -228,6 +230,7 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
       <EnableEnhancedInstructionSet>NoExtensions</EnableEnhancedInstructionSet>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <ModuleDefinitionFile />
@@ -245,14 +248,15 @@
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <PrecompiledHeader />
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <ModuleDefinitionFile />
@@ -266,7 +270,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Testing Debug|Win32'">
     <ClCompile>
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-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -276,6 +280,7 @@
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       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
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@@ -290,7 +295,7 @@
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -299,6 +304,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
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@@ -311,7 +317,7 @@
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <PrecompiledHeader />
@@ -320,6 +326,7 @@
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       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
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@@ -337,14 +344,15 @@
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SQLITE3_EXPORTS;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_RTREE;SQLITE_API=__declspec(dllexport);_BIND_TO_CURRENT_VCLIBS_VERSION=1;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <PrecompiledHeader />
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <AdditionalOptions>/Zm150 /Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
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