spatsoc v0.1.17

• Add keyword internal by @maelle in #40
• Fix/rm lazy data by @robitalec in #42
• Fix/update actions by @robitalec in #41
• Rm unnecessary lines by @maelle in #43
• Fix/use c in by by @robitalec in #45
• Fix/clarify required timegroups by @robitalec in #46
• Fix/links in man by @robitalec in #47
• Fix/units group polys area by @robitalec in #49

Full Changelog: v0.1.16...v0.1.17