[QGIS-Developer] New plugin NumericalDigitize3 and core functionality of QGIS

[Igor]

Hello.

I’m developing general purpose plugin for QGIS 3.4+ , which is 
refactored well known plugins Numerical Digitize and Vertex Editor for 
QGIS 2.X.

The following functionality is currently implemented:
1. You can create new feature by entering coordinates of vertices from 
keyboard or clipboard (you can copy table data, contained coordinates, 
from tables of text documents, electronic spreadsheet, OCR programs or 
other programs and then paste it into table of plugin dialog for create 
feature).
2. In process of creating feature you can adding and removing parts for 
multipart features and rings for polygons.
3. You can add and remove rows in table of coordinates of plugin dialog 
for remove vertices or insert new vertices in any part of feature.
4. You can swap values of X and Y coordinates (It’s need sometimes for 
some projections).
5. You can reproject coordinates in place from one CRS to other CRS. 
(It’s may be useful when feature is created in incorrect projection).
6. You can edit existing feature same as creating feature. It’s 
replacement of  ‘Vertex Editor’,  but you can edit not one vertex, but 
all vertices of feature. Functionality specified in points 2 - 5 is 
implemented for editing existing feature. You can copy coordinates of 
vertices (all or some) into clipboard and then insert it as table into 
text document, electronic spreadsheet or other place for creating 
reports with coordinates of object or for other purposes.

In addition:
1. Plugin supports vector layers with Z and M values.
2. When creating or editing feature changes are displayed on canvas 
(used QgsRubberBand).

And now my questions:
1. Since it is a general purpose plugin, some stated above functionality 
may be released  in core interface of QGIS, but not in plugin. Is 
planned to include some functionality stated above in feature releases 
of QGIS?  If I continue to support and develop plugin, I don't want to 
do double work.
2. It makes sense to place plugin into QGIS 3.4 plugin repository?

If you want to see how plugin works, you can download it from 
https://github.com/desertwolf7/numericalDigitize3/releases and install 
plugin as zip archive.
Help is situated in 'Main menu' -> 'Vector' -> 'Numerical digitize' -> 
'Help'

-- 
Best regards
Igor Chumichev