Use epsilon as-is for epsilon1

[hcsch]

Since epsilon1 (latin small letter open e / latin epsilon) already just
uses epsilon (greek small letter epsilon), it should probably look and
behave exactly the same. The transformations previously applied to
epsilon in epsilon1 resulted in spacing incosistencies.

Fixes #377

The changed widths are copied directly from the epsilon glyph.

One thing to take note of are the alignment values. From what I can tell, automatic alignment was disabled for epsilon1 so far (alignment = -1;). Was that intentional due to it breaking epsilon1 on changes of epsilon? If so I'll add it back. I'm honestly not quite sure how alignment works and don't have the Glyphs app to try it out myself.

Here is what the epsilons currently look like on https://rsms.me/inter/lab/:

And here is how they look after this change:

Test string: εεέέɛɛʚʚɜɝɝɜaɜεεɜɜεɞ. The first four epsilons and last three regular epsilons are greek, the rest is latin.

[rsms]

Thank you!

[rsms]

This has been released with v3.19