0.5.3

Merge pull request #78 from aitap/openmp_fixes

.on{Load,Attach}: keep rsparse_omp_threads option

omp_thread_count(): use limits from OpenMP runtime

cran 0.5.2

Merge branch 'master' of github.com:rexyai/rsparse

Merge pull request #76 from david-cortes/fix_float_ubsan

fix CRAN issues with UBSAN

Merge branch 'dev'

re-arrange omp parallel region to make more efficient memory allocattions (#75)

simplify r cmd check options

- update readme

run CI only for master

fix accidentally introduced segfault

update github actions