v5.3.0

Symbolics v5.3.0

Diff since v5.2.0

Closed issues:

• Unable to sum(x.^2) (#455)
• Latexify does not work for Complex Symbolic Matrices (#865)
• Addition of Lambert W function to Symbolics (#875)
• type-piracy of materialize? (#882)

Merged pull requests:

• Symbolic matrices inverse via adjugate matrix. Implements #864 (#879) (@Gregstrq)
• Fixes latexify for complex symbolic numbers and arrays. (#880) (@Gregstrq)
• allow Latexify 0.16 (#889) (@KristofferC)
• Broadcast.materialize->copy (#890) (@shashi)