A working solution for "HTTPError: 400 Client Error".

[tinchogb]

Updated:

• API URL to support secure http, "https".
• service for attribute "chem_comp.name", "text_comp".
• class Terminal. Now to_dict() adds "negation" if it is only True, otherwise brokes, don't know why.
• class TextQuery. Now support service argument with "full_text" value.
• class Attr. Now contains_words() allows chem_comp.name service.

Tested on both supplied rcsbsearch notebooks:

• covid
• quickstart

Worked OK but should be checked.

[piehld]

Nice patch! FYI: https://github.com/sbliven/rcsbsearch/issues/4#issuecomment-1721469353