Tantivy 0.11.0

• Added f64 field. Internally reuse u64 code the same way i64 does (@fdb-hiroshima)
• Various bugfixes in the query parser.
  • Better handling of hyphens in query parser. (#609)
  • Better handling of whitespaces.
• Closes #498 - add support for Elastic-style unbounded range queries for alphanumeric types eg. "title:>hello", "weight:>=70.5", "height:<200" (@petr-tik)
• API change around Box<BoxableTokenizer>. See detail in #629
• Avoid rebuilding Regex automaton whenever a regex query is reused. #639 (@brainlock)
• Add footer with some metadata to index files. #605 (@fdb-hiroshima)
• Add a method to check the compatibility of the footer in the index with the running version of tantivy (@petr-tik)
• TopDocs collector: ensure stable sorting on equal score. #671 (@brainlock)
• Added handling of pre-tokenized text fields (#642), which will enable users to
  load tokens created outside tantivy. See usage in examples/pre_tokenized_text. (@kkoziara)
• Fix crash when committing multiple times with deleted documents. #681 (@brainlock)

How to update?

• The index format is changed. You are required to reindex your data to use tantivy 0.11.
• Box<dyn BoxableTokenizer> has been replaced by a BoxedTokenizer struct.
• Regex are now compiled when the RegexQuery instance is built. As a result, it can now return
  an error and handling the Result is required.
• tantivy::version() now returns a Version object. This object implements ToString()