Translation updates (gr.po has been renamed to el.po, the Swedish translation has been updated).
Now overlapping some text on page down / page up (user-requested).
Added Keywords entry to xchm.desktop.
Fixed a typo (occurences -> occurrences).
Tabs now show all the time (not just when more than one is used). This fixes a GTK 3 bug where the "hidden" only tab still showed some unsightly pixels. The main frame titlebar now shows only the book name (it doesn't change according to the title of the currently loaded page); the title of the current page is now shown in the tab title.
Fixed the title search.
wxWidgets 3.0 or newer is now required. The code has been further cleaned up and optimized. Fixed a scrolling bug on loading new pages and broken new tab behaviour.
Fixed the Mac build.