1. Bump version to 1.5.0-RC2

2. No more separate branch "qt4x5", all changes merged into "master" branch. Code may be compiled with both Qt 4.x and Qt 5.x versions.

1.5.0 Release Candidate 1

Release 1.0.1, with Windows-specific mouseover fixes.

GoldenDict 1.0.0 release.

Version 0.9.0.