New IDE features since
From Free Pascal wiki
The list should be created by Lazarus release version numbers (which include release dates). Here is a list of ideas I can think of, but I am sure there are many more.
For example:
v0.9.18 (2006-11-22)
block matching
The IDE automatically highlights matching blocks - begin..end pairs.
Unsorted
Any items below this point has not been sorted per Lazarus release yet.
procedure list - fast finding of methods
...
build in diff viewer
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guidelines in the form designer
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refactoring
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editor features like divider lines
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favourites in Object Inspector
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integrated unit testing with FPCUnit
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better anchoring and margins in form designer
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editor toolbar
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file browser
...