Added BitOutputStream class
Finished BitOutputStream exercise
Finished View Bits exercise
Finished View Hex exercise
Improved BitOutputStream by using bitwise operators
.gitignore update: ignoring *.dat files
Added FileViewerPane: basic file viewer template
Added BinaryEditorPane class
Finished Binary Editor exercise
Removed JOptionPane since it's not supported with JavaFX
Removed redundant import (java.swing.*)
textArea now wraps content when text overflows
Added HexEditorPane class
Finished Hex Editor exercise