License gosecco under LGPLv3

Merge pull request #52 from jaycegregg0/dockerfile-improvements

Refactor Dockerfile to be more efficient/useful

Add LockedLoad, to fix #51

Fix a typo in docs

Triggering Travis with an empty commit

Ok it helps to add the file

Expose the Parse function so it's possible to implement the Source interface

Fix another part of #48, allow for flexible loading of sources - in such a way that you can combine sources etc

Allow for duplicate equal rules, part of fixing #48

Fix #49 - allow for parsing of in-memory strings directly

Fix #47 - implement a bitset operator

Fix another issue for #40 - make going from number to name possible

use fmt.Errorf for formatting error messages

Fix #46, undefined macros raise similar error to undefined variables