releases/2.6.0.0

Created version 2.6.0.

Improved bookmark and zoom operations.
Fixed flickering and other issues with zooming.

• Arranged the Next/Prev buttons of the left and right panes side by side.
• Added expand and collapse and expand current bookmark button.
• The bookmark that corresponds to the current page is now displayed as selected.
• Extended PDF display up to 900%.
• Fixed an issue where trackbar magnification was incorrect when using wheel zoom.
• Fixed various issues with zoom.

Full Changelog: v2.5.0...v2.6.0