* New last/dotplot module for pairwise similarity plots
The `last-dotplot` tool takes a pairwise alignment in
[MAF](http://genome.ucsc.edu/FAQ/FAQformat.html#format5) format,
possibly compressed with gzip, or in a tabular format produced by the
`maf-convert` tool, and produces a similarity dot-plot of the two
sequences in one of the graphical formats supported by the Python
Imaging Library.
A the tool guesses the output format by the file extension of the file,
which is constructed by the module at run time, I have used the `args2`
option to convey this information to the module.
This new module is part of the work described in Issue #464. During
this development, we fix the version of LAST to 1219 to ensure
consistency (hence please ignore lint's version warning).
* Update the functions.nf file to the dev branch.
https://raw.githubusercontent.com/nf-core/tools/dev/nf_core/module-template/software/functions.nf
