Compile on 4.24 Preview 1

[grigorovich]

To compile plugin on 4.24 Ive just trim namespace 'UE4StringConv_Private' in file Source/VaRestPlugin/Private/VaRestJsonParser.cpp (line 86):

if (UE4StringConv_Private::IsHighSurrogate(Codepoint) || UE4StringConv_Private::IsLowSurrogate(Codepoint))
to dat
if (StringConv::IsHighSurrogate(Codepoint) || StringConv::IsLowSurrogate(Codepoint)).

UE4StringConv_Private to StringConv

Compiled and works fine with UE 4.24 Preview 1 on macos 10.15.1 and xcode 11.2

[ufna]

Thanks, @grigorovich , I've moved UE 4.24 support to separate branch until its release.