Removed a few empty lines

Updated FAQ for usage of ## to display empty label

InputText: Fixed cursor generating a zero-width wireframe rectangle turning into a division by zero.

Hovering require to hover same child window. Reverted 860cf57 (December 3), replaced by a flag resize grip. ...

Might break something if you have childs overlapping non-childs.

Tweak internal ButtonBehavior() to ease passing extra options

Comments

Added io.MetricsActiveWindows counter (#213)

ImFontAtlas: doesn't clear input data, left to the application. (#224)

ImFontAtlas: Fix toward allowing to add extra font without clearing existing one (need to comment out ClearInputData) (#224)

ImFontAtlas: added ClearFonts(), making the different clear funcs more explicit (#224)

Window title text centering tweaks, RenderTextClipped() now has different args for pos_max and clip_max #222

Added window title text horizontal alignment option (#222),, ImGuiAlign_ type for future use.

Tweaks, comments around ImFontAtlas ...

Removed unsigned int from API

Cleanup, merged duplicate code into a function

Merge pull request #218 from paperManu/inputNFlags ...

InputFloat2/3/4, InputInt2/3/4: Added extra_flags parameter.

Renamed flags to extra_flags in last commit

Input text flags added to InputFloatN and InputIntN

Example fix PopStyleVar on Vertical Slider to avoid assertion ...

Adding an explicit ImGui::PopStyleVar to avoid assertion in
CheckStacksSize

InputText: make sure Ctrl+V has ONLY the control key pressed (follow up to #214) + tidying

Untabifiy

* make sure letter-key shortcuts have ONLY the control key pressed (fixes bug for AltGr->Ctrl+Alt on windows)

Shutdown() test for g.IO.Fonts not being NULL to allow workarounds in case of using multiple contexts #207

Added style.ScrollbarRounding #212

Merge remote-tracking branch 'origin' into 2015-05-menus

Assert on modifiers stack size mismatch between Begni()/End() pairs #204 ...

Experimenting with this. It's helpful but not happy with the idea of
ImGui asserting on that sort of user error.

Examples: test for tooltip over popup.

Allow stacking popups, not really useful yet (wip #126)

Added ImGuiSetCond_Appearing to test the hidden->visible transition.

MenuItem() draft for popups, with Selected option (wip #126)

Tweak RenderCheckMark()