ensure we properly call gethostname from socket

Readme updates, plus adds the ability to pass ip/mac addresses

ensure sanitized keys are added to the __errors object as a string

sanitize meta values that are not JSON serializable, include a refere…

…nce to the respective key in the meta.__errors.sanitizedKeys array

ensure that LogDNA module recovers after internet reconnects

ensure python module can also pass an environment parameter

release lock on request fail

bump versions for new rlock changes

Bump version of module based on recent PRs

latest merge had an error, also change from print to logger debug