Update sqlparse to 0.4.2

[pyup-bot]

This PR updates sqlparse from 0.2.4 to 0.4.2.

Changelog

0.4.2

----------------------------

Notable Changes

* IMPORTANT: This release fixes a security vulnerability in the
strip comments filter. In this filter a regular expression that was
vulnerable to ReDOS (Regular Expression Denial of Service) was
used. See the security advisory for details: https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-p5w8-wqhj-9hhf
The vulnerability was discovered by erik-krogh and yoff from
GitHub Security Lab (GHSL). Thanks for reporting!

Enhancements

* Add ELSIF as keyword (issue584).
* Add CONFLICT and ON_ERROR_STOP keywords (pr595, by j-martin).

Bug Fixes

* Fix parsing of backticks (issue588).
* Fix parsing of scientific number (issue399).

0.4.1

----------------------------

Bug Fixes

* Just removed a debug print statement, sorry...

0.4.0

----------------------------

Notable Changes

* Remove support for end-of-life Python 2.7 and 3.4. Python 3.5+ is now
required.
* Remaining strings that only consist of whitespaces are not treated as
statements anymore. Code that ignored the last element from
sqlparse.split() should be updated accordingly since that function
now doesn't return an empty string as the last element in some
cases (issue496).

Enhancements

* Add WINDOW keyword (pr579 by ali-tny).
* Add RLIKE keyword (pr582 by wjones1).

Bug Fixes

* Improved parsing of IN(...) statements (issue566, pr567 by hurcy).
* Preserve line breaks when removing comments (issue484).
* Fix parsing error when using square bracket notation (issue583).
* Fix splitting when using DECLARE ... HANDLER (issue581).
* Fix splitting of statements using CASE ... WHEN (issue580).
* Improve formatting of type casts in parentheses.
* Stabilize formatting of invalid SQL statements.

0.3.1

----------------------------

Enhancements

* Add HQL keywords (pr475, by matwalk).
* Add support for time zone casts (issue489).
* Enhance formatting of AS keyword (issue507, by john-bodley).
* Stabilize grouping engine when parsing invalid SQL statements.

Bug Fixes

* Fix splitting of SQL with multiple statements inside
parentheses (issue485, pr486 by win39).
* Correctly identify NULLS FIRST / NULLS LAST as keywords (issue487).
* Fix splitting of SQL statements that contain dollar signs in
identifiers (issue491).
* Remove support for parsing double slash comments introduced in
0.3.0 (issue456) as it had some side-effects with other dialects and
doesn't seem to be widely used (issue476).
* Restrict detection of alias names to objects that acutally could
have an alias (issue455, adopted some parts of pr509 by john-bodley).
* Fix parsing of date/time literals (issue438, by vashek).
* Fix initialization of TokenList (issue499, pr505 by john-bodley).
* Fix parsing of LIKE (issue493, pr525 by dbczumar).
* Improve parsing of identifiers (pr527 by liulk).

0.3.0

----------------------------

Notable Changes

* Remove support for Python 3.3.

Enhancements

* New formatting option "--indent_after_first" (pr345, by johshoff).
* New formatting option "--indent_columns" (pr393, by digitalarbeiter).
* Add UPSERT keyword (issue408).
* Strip multiple whitespace within parentheses (issue473, by john-bodley).
* Support double slash (//) comments (issue456, by theianrobertson).
* Support for Calcite temporal keywords (pr468, by john-bodley).

Bug Fixes

* Fix occasional IndexError (pr390, by circld, issue313).
* Fix incorrect splitting of strings containing new lines (pr396, by fredyw).
* Fix reindent issue for parenthesis (issue427, by fredyw).
* Fix from( parsing issue (issue446, by fredyw)	.
* Fix for get_real_name() to return correct name (issue369, by fredyw).
* Wrap function params when wrap_after is set (pr398, by soloman1124).
* Fix parsing of "WHEN name" clauses (pr418, by andrew deryabin).
* Add missing EXPLAIN keyword (issue421).
* Fix issue with strip_comments causing a syntax error (issue425, by fredyw).
* Fix formatting on INSERT which caused staircase effect on values (issue329,
by fredyw).
* Avoid formatting of psql commands (issue469).

Internal Changes

* Unify handling of GROUP BY/ORDER BY (pr457, by john-bodley).
* Remove unnecessary compat shim for bytes (pr453, by jdufresne).

Links

• PyPI: https://pypi.org/project/sqlparse
• Changelog: https://pyup.io/changelogs/sqlparse/
• Repo: https://github.com/andialbrecht/sqlparse