Encoding for IRIs/CURIEs

[joeflack4]

Overview

Need to properly adhere to this as closely as possible: https://www.w3.org/TR/REC-xml/#NT-NameChar

[4] | NameStartChar | ::= | ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]

[4a] | NameChar | ::= | NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]

That is, the first character has certain allowed values, and the rest of the string has other (more lax) allowed values.

Addresses

INVALID ELEMENT ERROR
e.g. https://.../relations/Answer_of(PPI)" contains invalid characters

Additional info

https://robot.obolibrary.org/errors#invalid-element-error

[joeflack4]

@ShahimEssaid FYI I'm going to do a fix for a simple subset of this now. Probably will only stick to just fixing enough of these cases just to get it to run for us. But in an ideal world, I'd have it adhere to this.