bio_hansel: allow gz input

[gregvonkuster]

FOR CONTRIBUTOR:

• - I have read the CONTRIBUTING.md document and this tool is appropriate for the tools-iuc repo.
• - License permits unrestricted use (educational + commercial)
• - This PR adds a new tool or tool collection
• - This PR updates an existing tool or tool collection
• - This PR does something else (explain below)

[bernt-matthias]

Suggested change

	#if $data_type.fastq_input1.is_of_type('fastqsanger') or $data_type.fastq_input1.is_of_type('fastq'):
	#if $data_type.fastq_input1.is_of_type('fastqsanger') or $data_type.fastq_input1.is_of_type('fastqsanger.gz') or $data_type.fastq_input1.is_of_type('fastq') or $data_type.fastq_input1.is_of_type('fastq.gz'):
	fast_q_single.fastq
	#end if
	#if $data_type.fastq_input1.is_of_type('fasta'):
	#elif $data_type.fastq_input1.is_of_type('fasta') or $data_type.fastq_input1.is_of_type('fasta.gz'):
	fast_a_single.fasta
	#end if
	#if $data_type.fastq_input1.ext.startswith("fastq")
	fast_q_single.fastq
	#else
	fast_a_single.fasta
	#end if

Maybe this simplifies also elsewhere.

[bernt-matthias]

Do you know what attrs is doing here?

[bernt-matthias]

Good to go?

[bgruening]

Thanks @gregvonkuster and @bernt-matthias