LSP Plugins 1.1.0 released!

After a long delay, the new 1.1.0 release hase been made!

Today we also celebrate the second year of project lifetime since the 1.0.0 release!

The release slogan can be pronounced as: "Farewall to GTK!", that's why this release includes a lot of HUGE UI changes, so please try it carefully before using on your projects!

https://youtu.be/MXWgPCmXLD0

The overall changelist is the following:
* Ported all widgets from GTK+ 2.x to raw X11 + cairo
* Ardour DAW is supported by the UI as before
* Mixbus DAW is supported by the UI as before
* JUCE-based hosts are now supported by UI
* Tracktion DAWs are now supported by UI
* Renoise DAW is now supported by UI
* Bitwig Studio DAW is now supported by UI
* REAPER native linux version is now supported by UI
* Updated JACK plugin wrapper to support new UIs
* Updated VST pluign wrapper to support new UIs
* Updated LV2 plugin wrapper to support new UIs
* Implemented LV2:Instance support feature for optimizing LV2 DSP <-> UI transfers
* Official Steinberg VST 2.4 SDK is not required more for building VST plugins
* Added version check for JACK core libraries to prevent multiple installations conflict
* Requirements of naming JACK core library were reduced to only contain 'lsp-plugins' substring
* Added version check for VST core libraries to prevent multiple installations conflict
* Requirements of naming VST core library were reduced to only contain 'lsp-plugins' substring
* Ported Gtk2Box widget to X11UI widgets
* Ported Gtk2Button widget to X11UI widgets
* Ported Gtk2Cell widget to X11UI widgets
* Ported Gtk2Grid widget to X11UI widgets
* Ported Gtk2Indicator widget to X11UI widgets
* Ported Gtk2Label widget to X11UI widgets
* Ported Gtk2Led widget to X11UI widgets
* Ported Gtk2Separator widget to X11UI widgets
* Ported Gtk2Switch widget to X11UI widgets
* Ported Gtk2Knob widget to X11UI widgets
* Ported Gtk2Meter widget to X11UI widgets
* Ported Gtk2Group widget to X11UI widgets
* Ported Gtk2Align widget to X11UI widgets
* Ported Center widget to X11UI widgets
* Ported Axis widget to X11UI widgets
* Ported Marker widget to X11UI widgets
* Ported Basis widget to X11UI widgets
* Ported PortAlias widget to X11UI widgets
* Ported Text widget to X11UI widgets
* Ported Mesh widget to X11UI widgets
* Ported Dot widget to X11UI widgets
* Ported IGraph widget to X11UI widgets
* Ported Gtk2Graph widget to X11UI widgets
* Ported Gtk2ComboBox widget to X11UI widgets
* Ported Gtk2Window widget to X11UI widgets
* Ported Gtk2File widget to X11UI widgets
* Ported Gtk2Body widget to X11UI widgets
* Ported Gtk2MountStud widget to X11UI widgets
* Implemented ScrollBar widget
* Implemented Edit widget
* Implemented ListBox widget
* Implemented Menu widget
* Implemented File Save/Open dialog
* Implemented Hyperlink widget
* Implemented Fader widget
* Implemented File saving widget
* Implemented basic clipboard support
* Code clean up and project tree refactoring
* Fixed inline display drawing issue related to GCC 6 optimization specifics (thanks to Robin Gareus)
* Changed maximum sample length of the Schlagzeug plugin up to 64 seconds
* Changed maximum sample length of the Triggersensor plugin up to 64 seconds