use instance? check
clone Matrix to make a Vector object
Vector and Matrix equiv edits
add Vector type and some related functions
make-new-matrix refactoring
fix up vector constructor and tests
protocol implementation fixups
Merge pull request #17 from mikera/master

Update dependencies
Fix up tests and core.matrix implementations
Merge remote-tracking branch 'upstream/master' into vector-type
Merge pull request #18 from mikera/vector-type

Vector type implementation for core.matrix