To do for next release with Gammapy v1.3 support

[chaimain]

🚀 The feature, motivation and pitch

Additions/Modifications -

• Internal code for estimation of EBL-deabsorbed spectra/model
• Maybe fix Follow usage of pydantic from Gammapy or pursue something different? #175
• Resolve Update numpy requirement from <2.0 to <3.0 #170
• Check for reverting Fix issues with dependencies #182
• Update lines in code for FoVBackgroundModel
• Check the usage of the new FitResult object
• Create a dedicated documentation page to list the distinct features of asgardpy in comparison to the latest stable release of gammapy
• The default spectral model's index is set at 0. Fix in the test here
• Add analysis for HAWC data (3D dataset requiring some extra reduction steps) #187
• Add just a SED plot of Crab Nebula using public data of the different instruments #188
• Support python 3.13 and maybe remove 3.11?
• Check the serialisation efforts on each type of Dataset. See example of 3D dataset here and maybe try generalizing or including serialisation as yaml files as another option. Have to modify code here.

Removal -

• Additional dataset of PKS 2155-304 (From Show support to correctly derive EBL-deabsorbed spectrum #174)
• Additional dataset of LST1 DL4 dataset (From Add LST1 DL4 Crab data #184) Not included in Gammapy v1.3

Alternatives

No response

Additional context

No response