3.0.0 - pyton3 style cython and cleanup

• Migrated fully to python3 syntax in cython
• Multiprocessing fork is slowly being dropped:
  • see here
  • telomerecat no longer depends on parabam for BAM processing in bam2telbam

There will be minimal support for parabam going forward

Tidied up messages printed on screen

• removed some confusing output messages, which are notes for the developer.

2.3.0 Compatible with Python3

• Supports python3
• Now compatible with the latest version of pysam in Python3
• It can use a temp folder properly. Command-line option --temp_dir is added to allow a user to specify the folder path.
• It can output telbam files to a specified directory.