v0.6.0: Merge pull request #10 from narenaryan/feat/xml-serialize

YAML & XML serialization support

• Now serialize PromptML prompt to XML & YAML with methods like to_xml() and to_yaml() on prompt parser

Deprecated

• serialize_* methods
• deserialize_* methods

Example usage:

from promptml.parser import PromptParserFromFile
p1 = PromptParserFromFile('prompt.pml')

# parse the prompt
p1.parse()

# serialize prompt to XML
print(p1.to_xml())

# serialize prompt to YAML
print(p1.to_yaml())

# serialize prompt to JSON
print(p1.to_json(indent=4))