SysBioChalmers/Human-GEM: Human 1.9.0

Style (PR #294): add and reformat citations in README Fixes (PR #292): replace deprecated Ensembl gene ids with updated ones, as reported in #278 update genes.tsv annotation file using script fetch_ensembl_gene_annotations Features (PR #291): adjust sanityCheck script to enable the detection of reusing deprecated MA ids, as discussed in #265 Fixes (PR #290): fix the ATP hydrolysis stoichiometry in biomass equation MAR13082, as reported in #289. Fixes (PR #287): refactor fetch_ensembl_gene_annotations.py script to allow retrieving annotations with empty gene symbols or ENSP ID, and to show the replacement Ensembl IDs for deprecated ones, as proposed in #278 Features (PR #286): introduces a GH Action for testing the yaml conversion with testYamlConversion. Fixes (PR #285): fix: merge duplicated long-chain fatty acyl-CoA mets, as reported in #268, #269 Style (PR #284): rename default branch (master --> main) as discussed in #226 change default branch names in repo documents and code Fixes (PR #283): remove cytosolic protons from reaction in other subcellular compartments, as detailed in #282 revise MAR05259 by replacing proton with lysosomal version remove MAR04758 that is duplicate to MAR01044 remove MAR01459 that is duplicate to MAR02041, whose proton is replaced with the mitochondrial version Fixes (PR #281): excluded gene ENSG00000197375 from MAR02590 (carnitine shuttle), due to lack of evidence (#279) Style (PR #275): add .gitattributes file to ensure consistent LF line endings as discussed in #264 Features (PR #274): add rxnNotes field to Human-GEM, as planned in #272 adjust importYaml/exportYaml functions to enable handling of rxnNotes fiel