Merge branch 'data_types' ...

# Conflicts:
#	CHANGELOG.txt
#	imgui.cpp

Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.

Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory(), io.WantSaveIniSettings. (#923, #993)

Skip missing font glyphs V2 revert changes to stb_truetype.h (

Internals: Renamed IsCharIsSpace() to IsCharIsBlank*() to match standard terminlogy and added ascii/u16 variations.

Comments, minor tweaks

Begin: moved tooltip position code in an else block. Misc comments

Version 1.61 WIP

Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other back-ends. (fixes 6cee2fc) (#1733, ~#1731) + assert

Version 1.60

Fixed a few zealous warnings.

Removed need for -Wnocast-qual on modern Clang/Xcode as a token of good behavior. Unfortunately the old stb_ decompress code is a little const clunky. + warning fix in stb_textedit which is already in master afaik.

Fixed Clang zealous cast-call warning (on par with GCC) which decided to warn against explicit C-style casts now.

imconfig: Added IMGUI_STB_TRUETYPE_FILENAME, IMGUI_STB_RECT_PACK_FILENAME + documenting IMGUI_DISABLE_STB_XXX flags and hiding IMGUI_STB_NAMESPACE which is misleading. ...

Fixed typos in todo list.

ImDrawList: Added Clone() helper function.

Update TODO list, minor fix in Readme, comments, Clang -Weverything warning fix in imgui_draw.cpp under Windows.

Style: CloseButton() now display a proper cross. Using Button colors for background. Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered as the closing cross uses regular button colors now. (#707)

ImFont: Added FindGlyphNoFallback. Fixed MergeMode broken by 1ef1acb

Merge branch 'master' into font_offset

Font: Fixed MergeMode adding duplicate glyphs data instead of reusing existing (broken by 072d6d8)

Fonts: Fixed debug name not being zero-terminated if longer than storage buffer + made buffer slightly longer as well.

Removed redundant semi colons. (#1653)

Comments, FAQ update.

Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT for consistency with other enums. Added

ImDrawList: Better looking non-AA rectangle (lower-right corner and rounding). (#1646)

ImDrawList: PushTextureID(): Removed unnecessary param by reference.

Renamed misleading ImGuiMouseCursor_Move to ImGuiMouseCursor_ResizeAll. SDL: Fixed cursor. (#1626)

ImFont: stb_truetype now rounding Ascent/Descent the same way as freetype does, they seem to vertically align better this way.

ImFont: DisplayOffset.y defaults to 0 instead of +1.

Comments, moved ImFontAtlas::Flags to "public" area.