When parsing enums from strings using `genEnumCaseStmt`, `AnyEnumConv`
warnings are generated due to conversion from integer value. It seems
possible meanwhile to refer to the actual `enum` value by symbol instead
of being required to do the conversion from `ord`, even when the `enum`
is defined in a `block`.
* [enumutils] provide node kind for `Invalid node type` error
* [enumutils] add support for nnkAccQuoted in `genEnumCaseStmt`
For reasons unknown to me, when running `nim doc` on a file that uses
`parseEnum` with an enum that contains accented quotes errors at CT
with the `Invalid node for type` error. Further errors are raised,
probably because the enum parsing fails?
* CIs: attempt to use csources_v1
* also updated the BSDs
* also updated azure pipelines
* std modules should not itself use the 'std/' import dir...
* compiler has to be careful with std/ for v1 booting
* add enumutils.items for enum with holes
* changelog
* ref in lib.rst
* use `type SomeSparseEnum* = (not Ordinal) and enum` instead of concept
* address comment: rename back to enum with holes
* add parseEnumRange
* fix runnable example
* update changelog
* use parseEnumRange in compiler
* reorganise code
* add changelog, make single normalizer argument
