Add nominal support for zabbix v 4.0

[svdasein]

This just slaps 4.0 in the list of supported versions. I've not tested it beyond my immediate needs but it works well enough for me.

[gdubicki]

See also #85 (comment).

[gdubicki]

In 4.0 a few deprecated in 3.4 API methods have been removed:

ZBXNEXT-4247 | removed deprecated API methods: user.updareProfile, user.addMedia, user.updateMedia, user.deleteMedia, usergroup.massAdd, usergroup.massUpdate and usermedia.get

Sources:

• https://www.zabbix.com/rn/rn3.4.0alpha1
• https://www.zabbix.com/rn/rn4.0.0alpha1
• https://support.zabbix.com/browse/ZBXNEXT-4247

[gdubicki]

Above methods are used here in this lib:

• https://github.com/express42/zabbixapi/blob/master/lib/zabbixapi/classes/usergroups.rb#L48
• https://github.com/express42/zabbixapi/blob/master/lib/zabbixapi/classes/usergroups.rb#L65
• https://github.com/express42/zabbixapi/blob/master/lib/zabbixapi/classes/users.rb#L37
• https://github.com/express42/zabbixapi/blob/master/lib/zabbixapi/classes/users.rb#L54

[gdubicki]

I suggest to remove those 4 methods in this PR (can you, @svdasein ?) and release this library as 4.0.0 (it seems that its version is synchronized with Zabbix) stating in the changelog that some unsupported in 4.0.0 methods have been dropped.

What do you think about this approach, @lehn-etracker ?

[gdubicki]

@aladmit : maybe you can reply to my proposal above?

[aladmit]

@gdubicki Sounds great for me, but I don`t maintain this project anymore.

If you want to realize this approach and support it, I`ll give all permissions for that.

[gdubicki]

Ok, I will try, @aladmit .

[baurmatt]

@svdasein Could you please include the suggested change of @gdubicki? Would love to see this merged/released! :)

[svdasein]

I'm not the project maintainer - I can't merge anything. Also re: excluding methods - I'm not sure the right approach is to just delete them - there's probably some version checking logic that needs to go in. Again though I'm not the maintainer. I just did that one stupid little hack.

[gdubicki]

@aladmit : so can you please give me maintainer permissions?

[aladmit]

@gdubicki Done!

[gdubicki]

Let's add the overdue support for 4.0 for now. I will work on cleaning up non-working methods in a minor update within a few days.