FEATURES
1. Added data and diagram plugins system
2. Added N2G CLI tool to generate diagrams
3. Added `xlsxl_data` plugin together with CLI tool bindings for it
4. Added `cli_l2_data` plugin to draw diagrams based on CDP and LLDP protocols relationships, MAC tables
5. Added support for `src_label` and `trgt_label` to `drawio` diagram plugin
6. Added V3D diagram module to produce JSON structure compatible with `3D Force-Directed Graph <https://github.com/vasturiano/3d-force-graph>`_
7. Data plugin `cli_ip_data` to draw diagrams based on L3 network data - subnets, IP, ARP, VRRp, HSRP
8. Added `cli_isis_data` data plugin to draw ISIS LSDB data diagrams
9. Added `cli_ospf_data` data plugin to draw OSPF LSDB data diagrams
10. Added `json_data data` plugin to source data for diagram from JSON text
BUGS
Nill
CHANGES
1. Moved diagram modules to diagram plugins