#7 Implemented subtitle stream (WIP)
Merge remote-tracking branch 'upstream/master' into 7_subtitle
Implemented  complete support for BITMAP subtitles
Fixed an issue that was breaking the build on Clang compiler
decode packages only when it is necessary
Removed Dynamic Memory Allocation
Fixed an issue that caused the texture to be released before it was wished
Fixed some design issues
Merge branch 'master' of https://github.com/Yalir/sfeMovie

Conflicts:
	src/MovieImpl.cpp
Did some code cleanup
Merge branch 'master' of https://github.com/Yalir/sfeMovie into 7_subtitle
Fixed some issues from the merge
#7 Working on Timer::Observer interfaces
Merge branch 'master' into 7_subtitle
Did fix multiple issues with subtitlestreams
#7 Make the subtitle visible on screen (still not perfect)
#7 Prevent display frame from being null if Movie::fit() isn't used
#7 Make the subtitle correctly centered when scaling
Fixed subtitle scaling
#7 Fixed constness