Create new SampleBuffer class

[nwolek]

This should be a subclass of SampleBundle. Features that are more appropriate will move here such as:

• interpolation
• padding
• generate

[nwolek]

Although our initial design in Florida was motivated by the desire to serve both roles of vectors and buffers, this will potentially add a lot of overhead when SampleBundles are used to pass signals. Therefore, it makes sense at this time to parse these two roles from each other, but maintain a link via subclassing. This realization was made during a Skype between myself and @tap today.

[nwolek]

After my initial review of the code in JamomaSample.h, these functions will be moved from SampleBundle to SampleBuffer in the subclassing process:

• paddingSize
• at
• generate
• applySamplePadding
• applyZeroPadding