Inventory 0.13.0

What's Changed

• Licensing data: sockets, edition, licence channel, roles, SQL instances, Hyper-V host mapping by @erSitzt in #100
• VMware vCenter: hosts, clusters and VMs for the licence calculation by @erSitzt in #101
• Microsoft licensing: Windows Server need per host vs licence stock by @erSitzt in #102
• XCP-ng: hosts, pool and VMs through the XAPI or Xen Orchestra by @erSitzt in #103
• Microsoft licensing: SQL Server, calculation steps and break-even by @erSitzt in #104
• Licensing totals and PDF report; several virtualization systems grouped by platform by @erSitzt in #105
• Licensing: clusters licensed one way, VM mobility per cluster, Microsoft documents by @erSitzt in #106

Full Changelog: v0.12.0...v0.13.0