a executeable version
add wheel event and drop function
fix the bug of filemanager
add graphicsview and graphicsitem
replace viewer with qgraphicsview
add go and preview function
change the scale method to fit window width
Revert "change the scale method to fit window width"

This reverts commit 4890218e49d27b16293f0c85241ed2d838755416.
delete unused files
fix scale bug
Merge branch 'master' of https://github.com/qdaxb/mangaviewer

Conflicts:
	src/qgraphicsmanagaview.cpp
	src/qgraphicsmanagaview.h
	src/qgraphicspagedpixmapitem.cpp
Merge branch 'master' of https://github.com/qdaxb/mangaviewer

Conflicts:
	src/qgraphicsmanagaview.cpp
	src/qgraphicsmanagaview.h
	src/qgraphicspagedpixmapitem.cpp
licence
add zip libs
add rar libs
add zip loading and drag/drops
add next page and pervious page command
edit perviouspage logic
new branch of scroll item
change viewer to scrollgrid