Issue Description:

Very self-explanatory: off-hand items are not charged by the wireless charger (most notably the staff of traveling). I haven't tested but I'd be surprised if this wasn't a bug on the 1.9.4 builds too, but I wouldn't make too much effort in back-porting if I were you - I don't think anyone else has noticed this bug since I couldn't find a pre-existing report.

What happens:

Off-Hand items are not charged

What you expected to happen:

Off-hand items to charge

Steps to reproduce:

1. Prepare Wireless Charger with any source of RF
2. Hold an RF storing item in the off-hand which is not fully charged
3. Lie down and cry

Affected Versions (Do not use "latest"):

• EnderIO: 1.10.2-3.0.1.75_beta
• EnderCore: 1.10.2-0.4.1.41-beta
• Minecraft: 1.10.2
• Forge: 12.18.1.2018

Your most recent log file where the issue was present:

N/A

will be in next build