Merge pull request #76 from ewollesen/master

Allows setting of the --continue flag with flog
Add checksum task
Allow ruby2ruby 2.0.x releases >= 2.0.2
Bump version to 4.2.0
Add mf_log logger
Switch out STDOUT.puts for mf_log
Merge branch 'mf_log'

* mf_log:
  Switch out STDOUT.puts for mf_log
  Add mf_log logger
Capture Saikuro STDOUT and redirect to mf_debug
Refrain from outputting flog details
Show the currently running task
Process all sexp nodes for line numbers
Include file path when ruby parse fails
Merge branch 'improve-stdout'

* improve-stdout:
  Include file path when ruby parse fails
  Process all sexp nodes for line numbers
  Show the currently running task
  Refrain from outputting flog details
  Capture Saikuro STDOUT and redirect to mf_debug