Light-client support?

[runvnc]

Hello, does this have a way to operate on the network without downloading all of the data?
Second part of the question, what I am actually trying to do is to include Ethereum as a feature of a platform I am creating. It seems that this library is the only option if I want it enabled by default because the other software is copyleft. For example, there is a geth light mode, but that is GPL, and I could create a plugin for my system, but if it is automatically installed with my software that is a violation of GPL unless I open source my project (which is undesirable because I dream of making a small amount of money by distributing it). Since Ethereum is an important feature of my project I don't want it to be an optional plugin.
Thanks for any time or advice you have.
BTW, it sounds like down the line Ethereum's scaling plans may change the situation with light versus full nodes, maybe it will not need to download so much data normally. So perhaps that new version will be something I can consider using when it is actually developed.

[runvnc]

This announcement seems relevant as far as I can tell https://blog.ethereum.org/2018/01/02/ethereum-scalability-research-development-subsidy-programs/