markovmix release v0.1.2

markovmix 0.1.2

New features:

• Add get_counts(), get_order() and get_states() functions to get members of a MarkovMix object
  in an easier way.

Enhancements:

• Update package documentation.

• Add documentation to C++ functions and export them to C++ interface.

Bug fixes:

• Import pillar::pillar_options since it is mentioned in the documentation of print.MarkovMix(),
  as reported from platforms as notes that pillar is listed as "Imports" but no function is imported.

• Fix incorrect documentation of value parameter in the replacement method of MarkovMix objects.

• Fix typos in the change logs of the documentations of MarkovMix utility functions.