DataTextureLoader: changed default minFilter

[WestLangley]

DataTexture.generateMipmaps defaults to false. Also, a data texture is not necessarily a POT.

Setting minFilter to LinearFilter is consistent with the other settings.

[Mugen87]

This change makes definitely sense.

[Mugen87]

Update builds: 06b449b

Do we need to add a migration note since the minFilter value of parsed EXR textures and raw data textures has changed?

[WestLangley]

Do we need to add a migration note since the minFilter value of parsed EXR textures and raw data textures has changed?

For DataTextureLoader, yes; for EXRLoader, no.

I have EXRLoader changes coming...

[Mugen87]

For DataTextureLoader, yes;

Done.

[mrdoob]

Thanks!