Partial indent should apply to every line of partial string

[sunng87]

Case to reproduce this issue.

Given

{{#*inline "thepartial"}}
  inner first line
  inner second line
{{/inline}}
  {{> thepartial}}

Expected result:

    inner first line
    inner second line

Current implementation:

    inner first line
  inner second line

[mmun]

This fix doesn't seem to work correctly if there is a block, e.g. {{#if}} within the partial. The content inside the block is not indented.

[sunng87]

@mmun can you give me a full example to reproduce? Thank you!