Fixing a bug when splitting unsized pages

Dependencies

• [2] 52X5P7ND Cleaning up the unsized part
• [3] GPP7KJSF Version bump
• [4] OP6SVMOD Resetting history
• [5] W2MIZD5B Single file databases + CRC for the root pages (checking the other pages makes everything very slow)
• [*] H3FVSQIQ Unsized pages
• [*] AOX2XQIS Actually, with the correct functions, Unsized pages are always slower than Sized pages (especially for writing)

Change contents

• edit in sanakirja-core/src/btree/page_unsized/put.rs at line 173
  [2.27902]

  [8.276]
  + header_mut(current_page).set_n(n as u16);
• replacement in sanakirja-core/Cargo.toml at line 3
  [4.70812]→[3.0:18](∅→∅)
  − version = "1.0.1"
  [4.70812]

  [4.70847]
  + version = "1.0.2"