Devanagari: 4.4.1 Inter Character/Akshara spacing for Indian languages - Need to have a clear definition in Unicode TR29 issue, add tests

[alolita]

https://w3c.github.io/iip/gap-analysis/deva-gap.html#interchar_spacing

Issue: This is a problem for all languages using Devanagari. The Unicode TR29 spec needs to have clear definition of Akshara segmentation for all languages.
Add: File an issue for Unicode TR29 and submit clear requirements for Akshara segmentation for Devanagari script and other Indic scripts.

Issue: Need to tests reflecting these Akshara segmentation (Hyphenation) rules
Add: Tests for verifying segmentation rules

[r12a]

Note that we already have an open issue about text segmentation at #18

Section 2.10 .1 being about letter-spacing, I created some exploratory tests that can be used to assess current browser behaviour.

• Devanagari (hindi)
• Bengali
• Tamil
• Gurmukhi

You can experiment by adding your own text, and you can apply and change values for the CSS letter-spacing property.

Please report any anomalies you spot.