* Fixed not correct behaviour in create/import tools when other layers
are open.
* Headers of the INP sections written in English.
* Validation in element properties to prevent same final node in
lines.
* Fixed error when importing tanks.
* Improved simplification of vertices to eliminate repetitions at the
starting point.
* Fixed error writing the Times of Options.
* Metadata restructuring, now unified in the *_Metadata.txt file.
* Fixed error joining pipes with the same characteristics when they
start and end in the same node.
* Check for new versions and notify the user.
* Fixed icons display in the legend for QGis version 3.12
* Fixed bug that prevented saving result styles.
* Fixed error in decimal symbol reading when the user uses the English
format and changes the decimal symbol by comma.
* EditProject switches to LayerManagement to control visibility of
layers and their creation.
* Now the projection is correctly saved in the PRJ file.
* New window with project options.
* Separation between Import (without project - INP or SHPs) and Add
data (with project - only SHPs).
* Spatial tolerance when importing/adding data from SHPs.
* Manual includes ascii file format for elevation interpolation and
classification of the 4 types of hydraulic sectors.
* Simplified 4 layers of meters in only 1.
* Fixed error when writing SHPs of issues in valves and pumps.
* Methods to assign roughness, check overlapping elements, aligned
vertices, lengths, material, diameter or installation date now also
for selected elements.
* Fixed error in very specific case when creating individual
T-connections.
* New dependency management to avoid errors if they are in use.

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