This makes the following changes:
- riles are identified by an ID
- include / exclude list now work
- rules are selected based on these lists
- blacklist rules are broken out into methods
- rule constructors now take the config map
- config file can be used to select rules
- CLI options embelish config selection options
There are some cases where the '.' character would also match any
character and could lead to incorrect results. For example the
regular expression - `^ioutils.WriteFile$' would match
ioutils.WriteFile, but also ioutils_WriteFile.
Additionally made sure that all regexp were declared using raw
strings to avoid any unnecesary string escaping that potentially
make the regexp difficult to read.
Check right-hand side expr for literals when looking for hard-coded
credentials. This is to avoid issuing warnings for cases where a
password, token, etc. is read from a file or a terminal.
