Dependencies: plumbum 7z/zip/unzip tools biosig++ ¿?

Roadmap:

• Define the conceptual model... OK
• Explicits an extensible architecture... OK
• Define the writing data structures... OK
• Define the loading data structures... IN PROGRESS
• Add conversion from EDF to BIF
• Add conversion from GDF to BIF
• Add conversion from BCIC-3 to BIF
• Add conversion from Physionet Format to BIF
• Create a common generic database
• Adding base feature support: FFT, WT, and so on
• Create a signal
• Create a 3D viewer