Updated to Capsule 0.9.0 stable
Use plain string for version numbers instead of vars
Updated version and build numbers
Removed file
Fixed bug in TaskConfig#toBool() method and removed 'merge' getter
Refactored file() method to use 'if' branch instead of 'switch'
Normalise string to Path object in Channel.fromPath(String) method
Added comment
Merge branch 'master' of github.com:nextflow-io/nextflow