Version 0.1.2

• Add resize!() method.
• Support isless() even for unordered categorical values and arrays, so that they can be sorted. Comparison with < still only works for ordered values and arrays.
• Fix deprecation warnings on Julia 0.6.
• Deprecate A(T, dims) constructors, which are also deprecated in Julia Base.
• Categorical arrays and values structs are now immutable (of course array contents can still be changed).
• Performance improvements for == and isequal.