v0.7.76

Fix

• core-pecha: Retrive span info (0fb51b9)
• core-pecha: Add update last modified date (6285f79)
• core: Remove layer_name arg from set_layer (e88fe77)
• core: Set base and layer with OpenPecha (bb2f6d4)
• core: Layer can add, get and remove annotation from it (eed2086)

Documentation

• core: How to add base and layer to openpecha (15f96f5)
• Add base and layer to pecha (18a1571)
• Add assert in add annotation in layer (5347fb4)
• Fix docs src path (23a2a49)
• Add managing layer docs (a8bb38a)