New release for changes made after 0.6.0

[scootermon]

I wanted to use the SPI_IOC_RD_MODE32 ioctl but found out that the version 0.6.0 of this crate doesn't expose this.
I was very surprised to find out that this functionality was already added in #42 but there hasn't been a release since.

Are there any blockers preventing a new version from being released?

[eldruin]

There are no blockers. I opened #46 now for this.

[eldruin]

I have now released this as part of version 0.7.0.