Improvements for 1.0

[daladim]

Hi,

Thanks for your work on this Python module.
This pull request proposes a few changes :

• it fixes some bugs I have encountered (e.g. when handling Directives at the root of the config file)
• it also grabs recent modifications from users rjhornsby and rubentsirunyan
• it adds newer features (such as remove_node and add_nested_tags)
• it uses a more object-oriented syntax (see the changes on the README) and renames a method to be more self-explicit
• ...thus, it also breaks the API (but I think it is worth it :-) ). That is why I propose a new major version number (say, 1.0)

Thanks

[lpogo]

Hi,
code is working really nice. Parsing is much easier right now.
One point I see (not related exactly to this PR, but still), when "&" exist inside comment string, parsing failed, eg:
# Listen & NameVirtualHost resources in module
error:
File "...\venv37\lib\site-packages\pyparsing.py", line 4182, in parseImpl raise maxException pyparsing.ParseException: Expected {Group:({"</" W:(ABCD...) ">" LineEnd}) ^ Group:({"<" {{W:(ABCD...) <SP><TAB><CR><LF> W:(ABCD...) <SP><TAB><CR><LF> <= | >= | == | != | < | > | ~ <SP><TAB><CR><LF> W:(ABCD...)} | {W:(ABCD...)}...} ">" LineEnd}) ^ Group:({W:(ABCD...) Suppress:(<SP><TAB><CR><LF>) W:(0123...) LineEnd}) ^ Group:({{"#" {W:(ABCD...)}... LineEnd} ^ {"#" LineEnd}}) ^ Group:(LineEnd)}, found '&' (at char 9), (line:1, col:10)
Any ideas how to deal with it?