Updated cusips to ignore.

Updated composer

Created a method to determine the symbol's "type". Ex: CUSIP, ISIN, o…

…r SEDOL.

Update the isSEDOL code to eliminate some false positives.

Added tests and made a small bugfix.

Added some code to "clean" the CUSIP before testing and fixing.

Passing an empty/null string to trim was causing a deprecation error.

Updated composer.

Added a test for SEDOL identifiers.

Removed a test. Added a comment.