rebar3

Historia

Fred Hebert ca038d39f7 Proper custom pkg index support, some tests - The rebar package index files have been moved off the default path and will require a new `rebar3 update` - Caching of downloaded packages automatically takes place in a path relative to the CDN used - The cache path is not shared with hex as we now write and modify data in there arbitrarily - Basic tests plus the working set for more of them is included		10 lat temu
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badindexchk-1.0.0.tar	Proper custom pkg index support, some tests	10 lat temu
badpkg-1.0.0.tar	Proper custom pkg index support, some tests	10 lat temu
goodpkg-1.0.0.tar	Proper custom pkg index support, some tests	10 lat temu