New Feature for vtkAxisFollower
 * Offset is now vectoriel

New features for axis actor
 * Finer control over size, thickness and placement of "minor" and "major" ticks
 * New Exponent label, with it's own location
 * Bug correction for Title visibility
 * Title Alignement control
 * Log axis
 * Better label style and scaling
 * Deprecation of CalculateLabelOffset and CalculateTitleOffset, which changes the class default behavior

New features in polar exis actor
 * Finer control over each polar exis, radial axis, and secondary axis ( visibility, style, color )
 * Finer control over main arc and secondary arcs ( visibility, number, style, color)
 * Finer control over ticks and labels (visibility, style, color)