  In this paper we consider the question of what abelian groups can arise as
the $K$-theory of $\mathrm{C}^*$-algebras arising from minimal dynamical
systems. We completely characterize the $K$-theory of the crossed product of a
space $X$ with finitely generated $K$-theory by an action of the integers and
show that crossed products by a minimal homeomorphisms exhaust the range of
these possible $K$-theories. Moreover, we may arrange that the minimal systems
involved are uniquely ergodic, so that their $\mathrm{C}^*$-algebras are
classified by their Elliott invariants. We also investigate the $K$-theory and
the Elliott invariants of orbit-breaking algebras. We show that given arbitrary
countable abelian groups $G_0$ and $G_1$ and any Choquet simplex $\Delta$ with
finitely many extreme points, we can find a minimal orbit-breaking relation
such that the associated $\mathrm{C}^*$-algebra has $K$-theory given by this
pair of groups and tracial state space affinely homeomorphic to $\Delta$. We
also improve on the second author's previous results by using our
orbit-breaking construction to $\mathrm{C}^*$-algebras of minimal amenable
equivalence relations with real rank zero that allow torsion in both $K_0$ and
$K_1$. These results have important applications to the Elliott classification
program for $\mathrm{C}^*$-algebras. In particular, we make a step towards
determining the range of the Elliott invariant of the $\mathrm{C}^*$-algebras
associated to \'{e}tale equivalence relations.
