fix: spec: running tests in python3 after build
fix get_str() in packagedelta-py
fix pycomp_get_string(), pycomp_get_string_from_unicode()

Actually dereference the pointer passed. Fix prototype and all users.
get_delta_from_evr(): create the python object only when delta exists
remove: packageDelta_new
New version: 0.4.6
build: 0.4.6-1
Do not crash when querying provides that do not exist

hy_reldep_create() returns NULL if nothing provides the name, so only add it to
the reldeplist if it's going to exist.
Fix malfunction of Package.__lt__ and Package.__gt__ (RhBug:1014963)
New version: 0.4.7
build: 0.4.7-1
fix: latest_per_arch on incompatible arches. (RhBug:1049226)

Patch by mls, thank you!
installonlies: erase packages depending on a kernel to be erased. (RhBug:1033881)
New version: 0.4.8
build: 0.4.8-1
tests: make test_goal_selector_upgrade() less assuming.

The test fails against libsolv after f190dfe because then libsolv keeps the
installed multiarch packages ('pilchard' in the test) in lockstep and can not
find the i686 alternative of the requested upgrade target.
fix Reldep inicialization without sack crash (RhBug:1052947)
fix not accepting numeric version in reldep (RhBug:1052961)
added nevra C API
added subject C API