Changes in version 6.3

• Release a new database
• Improve file format from save lines
• Display Y errors (only for some fits files for now)
• File: Fix reading VOTable containing NaN value
• Tools: Fix infinitite loop
• Database: Fix database creation to avoid bug if a tag is used by differents species
• Aladin Plugin: New release 6.3.0.0 based on CASSIS 6.3
• Bug fixing and improvements