microeco v0.6.5

1. Add project url and lazydata in description.
2. Optimize plot_group_distance function of trans_beta class.
3. Use lapply instead of sapply to avoid conflict in trans_nullmodel class.
4. Optimize color parameters in plot_cor function of trans_env class.
5. Add facet2 parameter in plot_bar function of trans_abund class.
6. Add DNAStringSet class of rep_fasta in microtable used for tax4fun2.
7. Optimize cal_ses_betamntd function in trans_nullmodel class.