more font support; add fonts to style editor in demo

use raw pointer for ImGuiContext

move and rename all static globals

label reference get/set functions

remove some unused raw pointers

use references for ImGuiTextEditCallbackData and ImGuiSizeCallbackData

remove constructors for ImVec2 and ImVec4

import float where Number.MAX_VALUE might be used

update to Emscripten 1.38.8

wrap all binding functions

initial Drag/Drop support

ImFontAtlas::GetTexDataAsAlpha8 is 1 byte per pixel

bind more of ImGuiIO

fix ImDrawList::AddTriangleFilled

add ImDrawList::AddPolyline and AddConvexPolyFilled

add ImGui::SetAllocatorFunctions

add ImGui::VSliderScalar

add and check ImGui::DebugCheckVersionAndDataLayout

overload ImDrawList::AddText; handle text_end; return remaining from CalcTextSizeA

add reference color to ColorPicker4

more function overloading

function overloading for RadioButton, PlotLines, PlotHistogram and Combo

add ImGui::Combo with callback

use macro for import/export string_or_null

additional font support; import/export floats and nullable strings

multiple font support

bind load/save ini settings in memory

use strict equals when checking value types

add types for [Drag/Input/Slider]Scalar

update imgui to v1.62 tag