AstNodeListImpl is now merging NT_TEXT nodes and discarding empty NT_TEXT nodes.

* parser-toolkit 77d33a1...5a3850d (5):

    commit 5a3850da276d4ab3e99d299caef8d9665893ba59

        AstNodeListImpl is now merging NT_TEXT nodes and discarding empty NT_TEXT nodes.

        NT_TEXT nodes are only merged "backwards". If a NT_TEXT node is inserted in front of another text node they will not get merged

    commit 45c492aa76e29faf9b76e7f27e706a88231d0faa

        Added missing @Override

    commit fd90785436cee514227b65524e79cb34ed24b0ff

        Fixed ctor visiblilty of test ast nodes

    commit dade5ea7499db43723363d35f495985a6d74e49d

        Forgot to rename some of the ast test nodes

    commit 9ee9e9c2d665fd77d6f8459b029a0c734ece4abe

        Fixed formatting

* sweble-wikitext 7dd358d...1990baa (4):

    commit 1990baaa676d351ff8dc0914b2ea62300a083edf

        Cleanup in swc-example-serialization

    commit 29d8994d6f245e2cfcb805b9bd5336d237969ef9

        Adapting test cases to new AstNodeListImpl behavior (merging NT_TEXT nodes)

        Also removed AstCompressor which is obsolete now

    commit def015a7c6b0bcfd2efe0b53f7246253580a279e

        Fixed ctor access rights on Wt* nodes

    commit 007bd016af4b971f2c55a1c3add544cf71b0da2e

        Fixed imports and formatting