v4.5.5: further Ssurgeon upgrades, SceneGraph server module, security bugfix

Ssurgeon updates beyond the capabilities listed in the GURT paper

• MergeNodes operation: combine two words into one word in a graph. one word must be a leaf headed by the other for this to work 0660fa9
• CombineMWT operation: mark MWT on two or more words. Stanza will treat these as Token 010a955
• DeleteLeaf operation: remove a leaf, renumber the subsequent words
  429f61a

Bugfixes

• fix graph serialization for sentences longer than 128 words (IdentityHashSet doesn't work for integers beyond 128) d8d9d9f
• fix valueOf for SemanticGraph if a word is just a dash 203eb06
• fix memory usage of evaluating a PCFG model, which would run out of memory because it was saving all of the charts while evaluating b2e67b0
• Tregex pattern would not correctly display when using optional patterns: a9965b2 8659653
• Tregex would infinite loop on certain optional patterns which were theoretically legal cc7983e

Security fixes

• update xom to 1.3.9, which should avoid unwanted, potentially vulnerable transitive dependencies
  c8772b7
• remove bz2 zip & unzip, which used a shell command and therefore could be hijacked https://nvd.nist.gov/vuln/detail/CVE-2023-39020

English dependency converter fixes

• addressing issue #1363
• fix (QP up to ...) 8c46648 9a86ece
• fix up to 1700 kilograms if misparsed in a predicable manner 6e14527
• better LST coverage 5745de5
• vmod/acl when the parser misinterprets NP vs NML ad4556d
• treat lists of NML as repeated modifiers of a noun, instead of a list, as that is the likely meaning of NML. example: a 72-game, three-month season from PTB 61ef545 5e748dc

Server features

• Scenegraph endpoint 8b40947 #1346
• remove one json library to reduce number of json libraries we depend on 357b1bb

Small changes

• allow fourty as a number in SUTime 7fbb7b8
• capture forty (40) days as a duration in SUTime b3c47a0
• feature to print out the feature index of an NER model as a text file f636673
• clarify the INTJ rule for the ChineseHeadFinder 56cd6bb
• consider { } as punctuation when scoring English constituency treebanks a606afa
• fix error in test case, from @tanloong #1373 #1372
• dead code cleanup 86b6a03