microeco v2.1.0

• create the trans_metab class
• add soil_metab and soil_microb example data
• drop unused factor levels in sample_table of microtable
• add add_prefix parameter in tidy_taxonomy function
• delete useless format in tidy_taxonomy function
• fix ordiArrowMul issue in trans_ordination of trans_env class
• linewidth instead of size in plot_ordination of trans_env class
• extend log2FC to Estimate in plot_volcano of trans_diff
• add xtitle ytitle xlabel ylabel parameters in plot_volcano of trans_diff
• use maaslin3 method in trans_diff and trans_env classes
• add complete_cases parameter in cal_cor of trans_env class
• fix env scope bug in cal_ordination of trans_env class
• add sample_name_each parameter in subset_network of trans_network class
• add example in subset_network of trans_network class
• fix order_x length issue in trans_alpha class
• fix return in deprecated functions in trans_func class
• add label_na and weight_na parameters in get_edge_table function
• fix feature selection name matching issue in RDA
• extend plot_volcano function to methods with Factors type
• fix the add_rownames2taxonomy warning in all classes
• fix the duplicated rows issue in ancombc result of trans_diff class