Adding metadata and parallel computations

🎁 What's New

• You can add metadata to datasets and tensors
• You can run computations in parallel using hub.compute
• The dataset API is updated to be more intuitive

🧭 What's Changed

• Add static dataset delete (#1060) @benchislett
• 2.0.4 release Version update (#1094) @davidbuniat
• Adding back transforms for parallel dataset uploads (#1086) @AbhinavTuli
• Release 2.0.3 (#1084) @davidbuniat
• Update code snippets (#1088) @istranic
• [refactor] encoders base class (#1082) @mccrearyd
• Alias "jpg" to "jpeg" (#1073) @benchislett
• Updated readme (#1085) @istranic
• [small] implement hub.like in new api (#1083) @mccrearyd
• Bugout reporting update (#1081) @istranic
• Info fixes (#1080) @farizrahman4u
• BUGGER_OFF=true when running tests in Circle CI. (#1079) @zomglings
• [small] Remove dataset link during creation of Hub datasets (#1078) @dhiganthrao
• Enable search in pdoc (#1074) @benchislett
• Added "dataset" class for interacting with underlying "Dataset" class (#1063) @AbhinavTuli
• [small] turn off activeloop reporting during circleci tests (#1076) @mccrearyd
• dataset/tensor info alongside meta (#1066) @mccrearyd
• [small] fix hub cloud throttling for tests (#1077) @mccrearyd
• Add back the history of master into main (#1061) @benchislett
• [Small PR] Removes tfds tests (#1070) @AbhinavTuli
• Old pytorch multiprocessing bug fix (#1068) @AbhinavTuli
• [Small PR] Renames hub.load to hub.read (#1064) @AbhinavTuli
• Made Dataset and LRUCache objects pickleable (#1049) @AbhinavTuli
• Alternate fix for tensor creation bug (#1065) @AbhinavTuli

⚙️ Who Contributes

@AbhinavTuli, @benchislett, @davidbuniat, @dhiganthrao, @farizrahman4u, @istranic, @mccrearyd, @tatevikh and @zomglings