Merge pull request #536 from igerber/release/3.5.2

Release v3.5.2: version bump + CHANGELOG reconciliation

Merge pull request #526 from igerber/release/3.5.1

Merge pull request #516 from igerber/release/3.5.0

Bump version to 3.5.0

Merge pull request #494 from igerber/release/3.4.2

Bump version to 3.4.2

Merge pull request #480 from igerber/release/3.4.1

Release 3.4.1: SpilloverDiD survey + Conley lifts, SunAbraham vcov_type, WLS-CR2 BM, methodology-tracker promotions

Merge pull request #470 from igerber/release/3.4.0

Release 3.4.0: SpilloverDiD (Butts 2021), Bacon R-parity goldens, agent-discoverability surface, PreTrendsPower R-parity audit

Merge pull request #445 from igerber/release/3.3.3

Release 3.3.3: Conley spatial-HAC SE, HAD stratified-survey Stute bootstrap, dCDH by_path × survey_design, Tutorials 21+22

Merge pull request #400 from igerber/release/3.3.2

Release 3.3.2: dCDH by_path × trends extensions, Yatchew mean_independence, HAD Phase 4 R-parity

Merge pull request #387 from igerber/release/3.3.1

Release 3.3.1: HAD survey-design consolidation, dCDH by_path placebos + sup-t bands, Phase 4.5 C

Merge pull request #368 from igerber/release/3.3.0

Release 3.3.0: HAD estimator, profile_panel, dCDH by_path, SDID survey complete