Yearly copyright update

[tgrego]

This brings the copyright notices to the year 2020.

[coveralls]

Coverage remained the same at 81.426% when pulling b3596d0 on copyright_2020 into 491b3b9 on master.

[ens-bwalts]

[bwalts@noah-login-02 ensembl (copyright_2020)]$ git diff HEAD^ | grep ^+ | grep -v +++ | wc -l
914
[bwalts@noah-login-02 ensembl (copyright_2020)]$ git diff HEAD^ | grep ^+ | grep -v +++ | fgrep  'Copyright [2016-2020] EMBL-European Bioinformatics Institute' | wc -l
911
[bwalts@noah-login-02 ensembl (copyright_2020)]$ git diff HEAD^ | grep ^+ | grep -v +++ | fgrep  'Copyright [2018-2020] EMBL-European Bioinformatics Institute' | wc -l
3

911+3=914, so the only lines changed are the copyright.

Likewise:

[bwalts@noah-login-02 ensembl (copyright_2020)]$ fgrep -ir copyright * | fgrep -v Wellcome | wc -l
938
[bwalts@noah-login-02 ensembl (copyright_2020)]$ fgrep -ir copyright * | fgrep -v Wellcome | fgrep -v 2020 | wc -l
24

938-24=914
24 lines with the word "copyright" in them checked, and determined not the copyright notice to be updated.

So, it looks like the annual copyright updater ran correctly. However, there are a few files that perhaps should have a copyright notice but don't.
fgrep -Lir copyright *
lists 440 files without the word copyright in them. Most of those probably don't need one, but there are a few to be considered:

• misc-scripts/canonical_transcripts/reason_changes.pl
• misc-scripts/xref_mapping/XrefMapper/gallus_gallus.pm
• misc-scripts/xref_mapping/XrefParser/CGNCParser.pm
• misc-scripts/xref_mapping/store_ccds_xrefs.pl

Need to decide if these (or others) should be taken care of here or in a separate PR. Happy to approve if we decide that new copyright notices should be handled separately.

[ameya1981]

Approved for the copyright changes. More files covered.