Fastdtlmapper

- Changed diamond v2.0.5 -> v2.0.15 to resolve CPU compatibility error (67)

- Fix error caused by exessive trimming of trimal (66)
- Add version info

- Add `python2` installation check to notify error cause

Update README & wiki
Clean code

- Add gain/loss map figure plotting function using ete3 (56)
- Add multifurcated gene tree correction function using Treerecs (5)

Remain tasks
- Update documents (README, wiki)
- Prepare test dataset
- Clean code