incorporating cron_job.py into demultiplex.py

What's Changed

• 171 feature request add lock file to prevent overlapping demux runs by @georgemarselis-nvi in #173
• 122 refactor move the code from cron jobpy into demuxenvsetupdetect new runspy by @georgemarselis-nvi in #175
• Release v1.6 by @georgemarselis-nvi in #176

Full Changelog: v1.5...v1.6

SSH delivery to nird: done

What's Changed

• 108 feature request use sample sheet to parse samplesheet file by @georgemarselis-nvi in #136
• 26 feature request deliver to nird: feature completed by @georgemarselis-nvi in #165

Full Changelog: v1.0...v1.5