Fixed bugs:

• Issue #260: JSON Schema test causes oom
• Issue #259: Wrong compiler warning
• Issue #261: Make user defined object cache more reliable
• Issue #263: regexp-matches mishandles partial optional match
• Issue #245: Invalid cache on (test r6rs hashtables)
• Issue #264: cond-expand missing from the default R7RS environment
• Issue #267: Macro expander in library top-level
• Issue #271: sagittarius--socket.so not found by sagittarius--tls-socket.so
• Fixed (rfc uri) regular expression
• Fixed DER generalized date format
• Fixed JSON Schema unique validator

New feature:

• SRFI-159 is now supported
• SRFI-160 is now supported
• R7RS-large Tangerine Edition is now supported
• SRFI library names later than SRFI-99 (R6RS) #272

Improvements:

• Update Unicode version to 12.1.0
• Correction of compile-r7rs #269
• SRFI 69's make-hash-table does not accept the R7RS version of equal? #270
• Minor improvements on (sagittarius timezone)
• Minor improvements on (sagittarius calendar)