compare_cluster_enrichment: Over-representation test of genes in each cluster
In Yutong441/TBdev: Infer a Trophoblast Developmental Trajectory

Over-representation test of genes in each cluster

compare_cluster_enrichment(
  markers,
  GO_data,
  organism_db,
  organism_name = "human",
  logFC_term = "logFC",
  pval_term = "padj",
  gene_name = "feature",
  log_FC_thres = 0.25,
  pval_thres = 0.05,
  enrich_area = "KEGG"
)

`markers`	a dataframe of DE genes from Seurat; alternatively, a list of DE genes may be used
`GO_data`	result from go_data
`organism_db`	which organism database, for example, org.Hs.eg.db
`organism_name`	which organism for KEGG and Reactome, e.g. 'human'. If `enrich_area` is TF or MIRNA, the organism name should be for the gprofiler database, e.g. 'hsapiens', 'mmusculus'
`logFC_term`	which column in `markers` contains the information for ranking gene expression
`enrich_area`	either KEGG or GO or reactome
`logFC_thres`	threshold of `logFC_term` beyond which a gene is selected for over-representation test