* Add Query builder
* Make query_builder.rs in sqlx-core
* Add QueryBuilder::new()
* Add QueryBuilder::push()
* Define questions for documentation
* Get new, push, push_bind working with types
* Handle postgres' numbered bind varaibles
* Add a test for QueryBuilder#build
* Move arguments into Option
* Refactor query builder
* Finish testing QueryBuilder#build
* Remove design doc
* Add a test for pushing strings with push_bind
* Integration test green
* Adjust some tests
* Make query builder generic about placeholder segmenent ('$N' or '?')
* Run fmt
* Redesign Arguments#format_placeholder in line with code review
* Use write! to push sql to QueryBuilder
* Add QueryBuilder::reset to allow for QueryBuilder reuse
* Run cargo fmt
- Remove Type bound from Encode + Decode which removes the defaults
for produces() and accepts(). This allows custom type implementations
to be more flexible.
* removes the lifetime from Row
* removes MySqlQueryAs, SqliteQueryAs, etc. (no longer needed)
* introduce query_scalar
* introduce Decode::accepts to allow overriding runtime type checking
per-type (replaces TypeInfo::compatible)
* introduce Encode::produces to allow overriding the encoded type per-value
* adds a lifetime to Arguments (and introduce the HRTB HasArguments)
to support zero-copy encoding with SQLite
* renames Database::RawBuffer to HasArguments::ArgumentBuffer
* introduce Connect::connect_with to provide an ConnectOptions type
explicitly to opt-out of connection string parsing
* introduce Value and ValueRef traits to allow decoding-deferred
extraction of values from Rows
* introduce Encode::encode_by_ref and change Encode::encode to take
by-value to try and re-use memory where possible
* use thiserror to generate sqlx::Error
* [!] temporarily removes query logging
* [!] temporarily removes transactions
