*******************************************************************************
* RECENT CHANGES
*******************************************************************************

=== 1.0.36 ===
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.35 ===
* Fixed bug in periodic timer.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.34 ===
* Added size aggregation for TabGroup and ComboGroup widgets.
* Added size aggregation for Group and Align widgets.
* Updated build system: ASAN, CROSS_COMPILE, DEBUG, DEVEL, PROFILE, STRICT,
  TEST, TRACE makefile flags replaced with 'asan', 'crosscompile', 'debug',
  'devel', 'profile', 'strict', 'test' and 'trace' FEATURE flags.
* Added process_pending_events() method for IDisplay for properly handling of multiple
  IDisplay::main() method calls.
* Added process_pending_events() in the tk::Display class for handling pending
  events at the main loop start and at the main loop end.
* Changed behaviour of the AudioSample widget related to displaying load status.
* ComboBox and ComboGroup now properly react on the 'ESC' key pressure and hides the dropdown list.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.33 ===
* Fixed widget redrawing atrifacts for some use cases.
* Updated behaviour of the Knob for better quantization support.
* Updated module versions in dependencies.

=== 1.0.32 ===
* Implemented tk::Image widget that can load and hold raster images.
* Added frame skipping if surface is not ready for rendering. This may be useful
  when we don't want to make the main UI thread to wait for a long time.
* Updated module versions in dependencies.

=== 1.0.31 ===
* Updated module versions in dependencies.

=== 1.0.30 ===
* Implemented new tk::RangeSlider widget.
* Implemented new tk::PianoKeys widget.
* Implemented new tk::Embed widget for embedding into graph widget.
* Fixed use after free for several scenarios when destroying the display.
* Updated module versions in dependencies.

=== 1.0.29 ===
* Added text clipping function for tk::Label.
* Implemented AudioEnvelope widget and it's integration into AudioSample.
* Implemented ws::IDisplay::get_file_descriptor method for obtaining event loop
  descriptor for Unix-based systems that use X11 protocol
* Updated module versions in dependencies.

=== 1.0.28 ===
* Added support of background color, brightness and background brightness for
  inactive widgets.
* Activity property is now accessible for any widget.
* Implemented Overlay widget.
* Added MacOS dependencies.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.27 ===
* Implemented OpenGL drawing surface supporf for X11 protocol. Can be disabled
  by setting LSP_WS_LIB_GLXSURFACE=off environment variable.
* Improved size estimation algorithm for tk::Label widget.
* Added inactive state and colors for following widgets:
  * tk::Button;
  * tk::CheckBox;
  * tk::ComboBox;
  * tk::Edit;
  * tk::Fader;
  * tk::FileButton;
  * tk::Fraction;
  * tk::Indicator;
  * tk::Knob;
  * tk::Led;
  * tk::ListBox;
  * tk::ListBoxItem;
  * tk::MenuItem;
  * tk::ProgressBar;
  * tk::RadioButton;
  * tk::ScrollBar;
  * tk::Tab;
  * tk::TabItem.
* Removed tk::Switch widget as being outdated.
* Optimized surface drawing and sizing algorithm.
* Rendering optimizations in widget containers.
* Removed outdated RackEars widget.
* Updated widget drawing code to match new interface of ws::IGradient.
* Updated module versions in dependencies.

=== 1.0.26 ===
* Removed internal key auto-repeat simulation for tk::ListBox.
* Updated text clipping algorithm for tk::Button.
* Fixed bun in tk::ListBox widget which didn't allow to scroll the list box
  when using keyboard keys.
* Implemented TabGroup widget.
* Implemented shortcut handling mechancs by tk::Window.
* Small bugfix in LedMeterChannel related to header display.
* Added maximum amplitude property to AudioChannel and AudioSample.
* Added possibility to draw background around tk::GraphText widget.
* Fixed stylesheets: keeping the order of properties same to the order in the XML
  document when stylesheet is applied to styles.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.25 ===
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.24 ===
* Improved ListBox behaviour relative to the item size.
* Bugfixes in tk::ListBox related to item creation, deletion and selection.
* Added text estimation suppot for tk::Button widget. 
* Added aggregate size computation (enabled by default) for tk::TabControl widget.
* Fixed bug in bookmak editor (set first/last actions) of the tk::FileDialog widget.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.23 ===
* Added header support by tk::LedMeterChannel.
* Added header support by tk::LedMeter.
* Implemented SLOT_MOUSE_POINTER slot for overriding mouse pointer.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.22 ===
* Updated module versions in dependencies.

=== 1.0.21 ===
* Added empty text property for edit.
* Added text size estimation feature to the tk::Label widget.
* Fixed illegal memory access when destroying Box, Grid and Menu widgets.
* Added tab.pointer property to the tk::TabControl.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.20 ===
* Added possibility to control the value set to RangeFloat and Float properties.
* Fixed illegal memory access when destroying Box, Grid and Menu widgets.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.19 ===
* Optimized work with atoms.
* Many code updates that could cause potential problems related to using another
  decimal point for floating-point number formatting.
* FileDialog now synchronizes the state of selected_filter property.
* Implemented widget overrides by priority on the graph widget.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.18 ===
* Updated module versions in dependencies.

=== 1.0.17 ===
* Updated module versions in dependencies.

=== 1.0.16 ===
* Added 'zero' property to tk::GraphAxis to associate the position of origin on
  the axis with some value.
* Updated module versions in dependencies.

=== 1.0.15 ===
* Updated module versions in dependencies.

=== 1.0.14 ===
* Improved code base by using PVS Studio static code analyzer.
* Fixed several issues reported by PVS Studio static analyzer.
* Added tk::Menu::showmp method to show menu at current mouse cursor's position
  as a window transient for specified widget.
* Updated module versions in dependencies.

=== 1.0.13 ===
* Several fixes and optimizations related to tk::LedMeterChannel and tk::LedMeter.
* Fixed bug in tk::TabControl widget destruction.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.12 ===
* Added 'Editable' property to tk::Knob widget.
* Optimized window move operation (does not require realize if window size did
  not change).
* Implemented graph line segment widget.
* Added meter feature to knob.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.11 ===
* Updated module versions in dependencies.

=== 1.0.10 ===
* Removed Makefile.d. Dependencies are now automatically generated at the build stage.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.9 ===
* Updated module versions in dependencies.

=== 1.0.8 ===
* Fixed invalid tk::TF_VERTICAL tether flag value.
* Added possibility to hide check/radio box for unchecked tk::MenuItem objects.
* Added SLOT_BEGIN_EDIT and SLOT_END_EDIT slot events.
* Fixed improper value calculation in cycling knob when clicking on the knob's scale.
* Added support of SLOT_BEGIN_EDIT and SLOT_END_EDIT by tk::Knob, tk::Fader,
  tk::ScrollBar, tk::GraphDot and tk::GraphMarker widgets.
* Added support of named widget groups.
* Added tk::Widget::has_parent method.
* Changed checkbox/radio button space allocation algorithm for Menu and MenuItem.
* Updated dependencies file.
* Added test build for Windows using MSYS2.
* Added missing tk::Grid::remove_all() method implementation.
* Updated build scripts.
* Updated module versions in dependencies.

=== 1.0.7 ===
* Added possibility to enable/disable Knob's scale actions.

=== 1.0.6 ===
* Added stretch and loop markers to the AudioChannel and AudioSample widgets.
* Added tk::Tab and tk::TabControl widgets.
* Additional functions to work with coordinates provided in the tk::Graph: xy_to_axis, axis_to_xy.
* Improved widget tk::Grid space allocation algorithm that eliminates rows/columns which contain
  widgets that share space across other rows/columns. 
* Added support of cusom file preview embedding into tk::FileDialog widget.
* Fixed problems with scrolling of the tk::ListBox.
* Fixed operations on undefined values in tk::CheckBox and tk::RadioButton.
* Updated build scripts.

=== 1.0.5 ===
* Updated build scripts.

=== 1.0.4 ===
* Added support of Windows operating system.
* Added support of modern C++ 11 standard and above.
* Updated build scripts.
* Added more formats for URLSink (Windows support).
* Fixed bug in ListBox widget that could result in memory corruption.
* Migrated from popup window arrangement paradigm to the tether paradigm.
* Added volume listing to the tk::FileDialog.
* Added element hovering for ListBox widget and derived ComboBox and ComboGroup widgets.

=== 1.0.3 ===
* Added Window::has_parent() method to check that window is embedded into another window.
* Added Display::enum_monitors() method to query current state of connected monitors.
* Added xrandr library dependency for the X.11-compatible systems.
* Updated window appearance algorithm.
* Added ipadding() property to the tk::Label widget.
* Updated build scripts.

=== 1.0.2 ===
* Added template get() method for the tk::Registry that allows to obtain widget of specific type.
* Updated key event handling algorithm in the tk::Window class.
* Added FileDialog::Search style for the 'Search' edit control.
* Changed the space allocation algorithm for the edit control (now border gap does not depend
  on border size).
* Renamed public method for prop::String from 'commit' to 'commit_value'.
* Fixed bug that could cause improper window sizing in several cases.

=== 1.0.1 ===
* Updated build scripts.

=== 1.0.0 ===
* Bugfixes for the tk::GraphDot widget.
* Added new Display::wait_events() method for polling display for incoming events.
* Updated rendering of tk::LedMeterChannel widget.
* Fixed NULL dereference when linking styles in the schema.
* Refactoring of widget rendering, allmost all usages of Color::scale_lightness
  replaced with Color::scale_lch_luminance.
* Added 'reduce' options to prop::Allocation property.
* Added 'reduce' options handling by tk::Box and tk::Grid widgets.
* Fixed bug in prop::StringList which could yield to ignore of localization parameters.
* Added support of CIE XYZ D65, CIE LAB D65, CIE LCH D65 and CMYK color schemes for tk::Color property.
* Implemented tk::Schema::add methods for adding custom styles at the initialization stage.
* Fixed bug in clipboard paste for tk::TextDataSink class.
* Updated brightness control for LED channels grouped into LED meters.
* Added border radius support to the tk::Menu widget.
* Fixed prolbem with scrollbar sync for the tk::ListBox widget.

=== 0.5.1 ===
* Updated code to match lltl library headers.
* Better integration with system::follow_url() routine.
* Added automatic style creation from XML schema.
* Added simple language configuration support by the tk::Schema class.
* Fixed allocation for invisible widgets inside the tk::Grid container.
* Updated behaviour of TextDataSink to be more memory-effective.
* Property 'size_constraints' renamed to 'constraints' for tk::Align and tk::Group widgets.
* Added 'set_horizontal' and 'set_vertical' methods to the embedding property.
* Fixed crash on empty tk::Grid container, added constraints() property to the tk::Grid widget.
* Added parse() method to all enumeration properties.
* Fixed knob behaviour which didn't trigger SLOT_CHANGE event when dragging knob's scale.
* Added ipadding() property for internal padding of the tk::Group widget.
* Fixed bugs reladed to SLOT_CHANGE notification delivery for tk::Switch widget.
* Added drawing mode for the widget that allows to switch between different kinds of widget look.
* Added basic background color inheritance support to widgets.
* Rendering of graph widget has been fixed and enhanced with "border.flat" property.
* Replaced text_border property for tk::Group widget with text_padding property.
* Added heading property for tk::Group widget.
* Replaced text_border property for tk::ComboGroup widget with text_padding property.
* Added heading property for tk::ComboGroup widget.
* Fixed missing builtin styles for tk::ComboGroup widget.
* Added spin_spacing property to tk::ComboGroup widget.
* Added 'balance_color', 'balance_color_custom', 'flat' and 'scale_marks' properties to the tk::Knob widget.
* Added font scaling feature to the tk::Font property.
* Added freetype2 library dependencies for UNIX-compatible operating systems.
* Added possibility to specify custom fonts in the stylesheet data.
* Added font loading support by the tk::Schema object.
* Fixed bug in menu item allocation that could yield to ugly-looking menus.
* Implemented proper UI schema loading at the runtime.
* Added tk::Registry class for managing widgets.
* Denied copy constructor usage for all widget classes.
* Added tk::Bevel widget which allows to draw bevels/facets in the UI.
* Added tk::Arrangement property which allows to arrange some element inside of another.
* Indicator now supports modern-style drawing.
* Added tk::MultiLabel widget for drawing vector glyphs.
* Added tk::TextAdjust property and support of this property by several widgets.
* Added support of hovers by the tk::Label widget.
* Fixed bug with UIE_MOUSE_IN and UIE_MOUSE_OUT event delivery when entering/leaving window.
* tk::Button now allows to use different colors for different states.
* Removed obsolete tk::StyleInitializer class.
* Fixed memory corruption in tk::Grid widget related to invalid cell pointers after reallocation of memory chunk.
* Additional feature added to ComboGroup that allows to select the active visible widget.
* Updated build system.

=== 0.5.0 ===
* Initial release.

