“Female composer” … or “composer?” These days, women continue to assert their place as the equal of men in the composing field, to the point where that gender modifier seems increasingly silly and outdated. In fact, some of the most vital and engaging new classical music being made today — full stop — is by women. Steve Seel opens Women’s History Month with a sampling, with works by Caroline Shaw, Annie Gosfield, Paula Matthusen, Amanda Feery, and a special tip of the hat to experimental music innovator Pauline Oliveros.