* fix linearization of either/or
* (Por) minor updates
- correction in Lexicon
- documentation in Morpho
- rm variants from Structural
* (Por) correct references to extinct opers
* (Por) rm Spa remnants
* (Abs) rm reference to Extra in Structural -- use Extend instead
* (Por) ExtendPor
- use Extend instead of Extra in All
- use Extend funs in Extra whenever possible
* trigger CI
* (Por) Diff
- sort opers
- rm old commented code
- tidy things up
- no semantic changes
* (Por) add IrregBesch module with verbs using Besch paradigms
- Besch :
- use hack to prevent runtime failure with glue in in vars output
- rm paradigm numbers
- add IrregBeschPor, verbs that use only bescherelle paradigms
- use them in Construction, Structural, Idiom, Extra
- Diff and Paradigms had (almost) the same oper (verboV/verbBeschH),
so combine them into one and use it
* (Por) update functions to use new Irreg suffix and resolve name conflicts
