fixed messed up import line
moved standalone scripts to tools/ directory
got rid of test output PDB files in tests/
created new package moderna.util
tests in test_util/ pass
imports adjusted. All tests pass.
Merge pull request #23 from lenarother/util

Extracted small helper modules to package moderna.util
changed Biopython support from >1.4 to >=1.53
Removed 500 LOC of untested & dead code. All tests pass.
made moderna.analyze independent of ModernaStructure. Removed connectivity analysis from RNAChain.
moved residue integrity methods from RNAResidue to moderna.analyze
Merge pull request #34 from lenarother/boost_coverage

Removed 500 LOC of untested & dead code. All tests pass.
Merge pull request #35 from lenarother/api_analyze

Started to clean up interface for moderna.analyze
master merged to bio153.
Merge branch 'bio153'
Branch master merged.