Problem:    Wrong type for "isunnamed" returned by getreginfo().
Solution:   Use VAR_BOOL instead of VAR_SPECIAL. (closes #11598)

Problem:    When using dash it may not be recognize as filetype "sh".
Solution:   Add checks for "dash". (Eisuke Kawashima,closes #11600)

Problem:    Various code formatting issues.
Solution:   Improve code formatting.

Problem:    Kitty shows "already at oldest change" on startup.
Solution:   When receiving the keyboard protocol state return the ignore key.
            (closes #11601)

Problem:    Oblivion files are not recognized.
Solution:   Recognize Oblivion files and alike as "obse". (closes #11540)

Problem:    MS-Windows: mouse column limited to 223.
Solution:   Use two bytes for each mouse coordinate.  Add the mouse position
            to scroll events. (Christopher Plewright, closes #11597)

Problem:    Cannot debug the Kitty keyboard protocol with TermDebug.
Solution:   Add Kitty keyboard protocol support to the libvterm fork.
            Recognize the escape sequences that the protocol generates.  Add
            the 'keyprotocol' option to allow the user to specify for which
            terminal what protocol is to be used, instead of hard-coding this.
            Add recognizing the kitty keyboard protocol status.

Problem:    Build failure with tiny version. (Tony Mechelynck)
Solution:   Add #ifdef.

Problem:    Using Ruby LDFLAGS may cause build problems.
Solution:   Do not add Ruby LDFLAGS to Vim's LDFLAGS. (Zdenek Dohnal,
            closes #11592)