Corrected versioning bam_stats_samtools

    ch_bam_bai // channel: [ val(meta), [ bam ], [bai] ]

    main:

    ch_versions = Channel.empty()

    SAMTOOLS_STATS    ( ch_bam_bai )

    ch_versions = ch_versions.mix(SAMTOOLS_STATS.out.versions)

    SAMTOOLS_FLAGSTAT ( ch_bam_bai )

    ch_versions = ch_versions.mix(SAMTOOLS_FLAGSTAT.out.versions)

    SAMTOOLS_IDXSTATS ( ch_bam_bai )

    ch_versions = ch_versions.mix(SAMTOOLS_IDXSTATS.out.versions)

    emit:

    stats    = SAMTOOLS_STATS.out.stats       // channel: [ val(meta), [ stats ] ]

    flagstat = SAMTOOLS_FLAGSTAT.out.flagstat // channel: [ val(meta), [ flagstat ] ]

    idxstats = SAMTOOLS_IDXSTATS.out.idxstats // channel: [ val(meta), [ idxstats ] ]

    versions = SAMTOOLS_STATS.out.versions    // path: *.version.txt

    versions = ch_versions                    // channel: [ versions.yml ]

}