v6.12.0

Symbolics v6.12.0

Diff since v6.11.0

Merged pull requests:

• New section in solver documentation (Expressions we can not solve) and updated symbolic_solve docstring (#1258) (@n0rbed)
• Add registration for Base.clamp (#1261) (@contradict)
• Simplifying acos(0/1), asin(0,1) and anything + 0 (#1264) (@n0rbed)
• Hotfix symbolic_to_float (#1267) (@ChrisRackauckas)
• feat: add support for typed function symbolics (#1270) (@AayushSabharwal)
• Simplifying fractions before solving (#1271) (@n0rbed)

Closed issues:

• inconsistent order of terms causes incorrect derivative calculation (#791)
• Problem with simplify (#1174)