Addition of the glottal stop

I have decided to add a sound to Alopian which I had long been trying to implant. I had not yet found an æsthetically pleasing way of writing a glottal stop, but I liked the idea.

Finally I decided to go with ḥ. It's the only consonant with a diacritic, and it's not ˛ but close enough.

The glottal stop is not found in any significant amount in native roots, but it is however found in affixes. The past markers te- or de- become -ḥe- intervocally;

tekẻdlas - it turned out that
taḥekẻdlas - it appeared

I'm quite happy with the change.