bump version

prepare release

removed examples and development files for master

Merge branch 'dev'

* dev:
  updated version number in readme
  explicit word sizes for index_t and coefficient_t
  pretty-print
  removed unneccesary check in file reader
  cleanup
  changed to more general default format
  added debug version to makefile
  cleaned up detection of apparent persistence pairs
  packed entry_t
  cleanup
  cleanup
  union find implementation
  union find for H^0
  fixed compressed_distance_matrix access
  cleanup
  cleanup to remove compiler warning
  added reduction matrix option to Makefile updated readme
  fixed csv reader
  fixed format selection for distance matrix

Merge branch 'dev'