remove SpeechFeatures requirement + example notebook

Project.toml

 name = "SpeechDatasets"
 uuid = "ae813453-fab8-46d9-ab8f-a64c05464021"
-authors = ["Lucas ONDEL YANG <lucas.ondel@cnrs.fr>",
-           "Simon DEVAUCHELLE <simon.devauchelle@universite-paris-saclay.fr>",
-           "Nicolas DENIER <nicolas.denier@lisn.fr>"]
+authors = ["Lucas ONDEL YANG <lucas.ondel@cnrs.fr>", "Simon DEVAUCHELLE <simon.devauchelle@universite-paris-saclay.fr>", "Nicolas DENIER <nicolas.denier@lisn.fr>"]
 version = "0.15.0"
 
 [deps]
 JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
 MLUtils = "f1d291b0-491e-4a28-83b9-f70985020b54"
-SpeechFeatures = "6f3487c4-5ca2-4050-bfeb-2cf56df92307"
 
 [compat]
-julia = "1.10"
 JSON = "0.21"
-SpeechFeatures = "0.9"
+julia = "1.10"

src/SpeechDatasets.jl

@@ -3,7 +3,6 @@
 module SpeechDatasets
 
 using JSON
-using SpeechFeatures
 import MLUtils
 
 export

src/corpora/speech2tex.jl

@@ -95,6 +95,7 @@ function speech2tex_prepare(datadir, outputdir)
     recordings = speech2tex_recordings(recordings_path)
 
     manifestpath = joinpath(outputdir, "recordings.jsonl")
+    @info "Creating $manifestpath"
     open(manifestpath, "w") do f
         writemanifest(f, recordings)
     end