Split string on substring. Closes #35
equals(), hashCode(), and readResolve() on Optional.None. Closes #43
[maven-release-plugin] prepare release motif-0.6.1
[maven-release-plugin] prepare for next development iteration
Merge branch 'equals-hashcode-on-None' into dev
Splitting on substring or chars includes empty strings in order to yield predictable positions of values. Fixes #35