test(nra): add more regression tests (thanks to Fedor)
feat(cmake): use ExternalProject to build capd-dynsys and filib++
feat(realpaver/rp_interval): implement rp_interval_* funcs using filib++
fix(cmake): fix capd configure options and deps
refactor(realpaver/rp_propagator): fix typo
fix(realpaver/rp_interval): use pow instead of power
fix(dsolvers/icp_solver): return true when ODE is not enabled.
fix(cmake): add ENABLE_ODE, use FILIB CFLAGS
refactor(dsolvers/icp_solver): move volume vars into the ODE block
chore(cmake): clean up